Suneet Agrawal

Lambda in Unreal

Fri, 15 Nov 2024 00:00:00 +0000

Lambda functions, or lambdas, are an essential tool in modern C++ programming and have powerful applications in Unreal Engine. They offer a concise way to define small, inline functions and are ideal for simplifying code, especially when working with delegates, multi-threaded tasks, or passing functions as parameters.

Delegates in Unreal

Fri, 01 Nov 2024 00:00:00 +0000

Delegates in Unreal Engine play an essential role in creating modular, decoupled, and event-driven code. They allow one object to call a function on another object without hard-wiring the dependency between them, which is perfect for implementing event-driven behavior. In Unreal, delegates are especially useful in game development to handle events, respond to actions, or manage callbacks.

Get and Set Methods with Date Objects in JavaScript

Fri, 13 Oct 2023 00:00:00 +0000

Working with dates is a common task in web development, and JavaScript provides a built-in Date object to handle date and time-related operations. Two essential methods for manipulating Date objects are get and set methods. In this blog, we will explore how to use these methods to retrieve and modify various components of a Date object.

Date Comparison in JavaScript

Wed, 11 Oct 2023 00:00:00 +0000

Working with dates is a common task in web development, and JavaScript provides a powerful set of tools for manipulating and comparing dates. Whether you’re building a scheduling application, calculating the age of a user, or implementing date-based logic, understanding how to compare dates in JavaScript is essential. In this guide, we’ll explore various techniques and best practices for comparing dates in JavaScript.

Map vs WeakMap in JavaScript

Mon, 09 Oct 2023 00:00:00 +0000

JavaScript provides various data structures to manage collections of key-value pairs, and two commonly used ones are Map and WeakMap. Both are used to associate values with keys, but they have distinct characteristics and use cases. In this blog, we will explore the differences between Map and WeakMap with examples to help you understand when to use each one.

Set vs WeakSet in JavaScript

Sat, 07 Oct 2023 00:00:00 +0000

JavaScript provides various data structures to manage collections of data, and two commonly used ones are Set and WeakSet. Both are used to store collections of values, but they have distinct characteristics and use cases. In this blog, we will explore the differences between Set and WeakSet with examples to help you understand when to use each one.

While and Do-While Loop in C++

Thu, 05 Oct 2023 00:00:00 +0000

Loops are fundamental constructs in programming that allow us to repeat a block of code multiple times. In C++, two commonly used loop structures are the while loop and the do-while loop. In this blog post, we’ll dive into these loops, understand their syntax, and provide examples to illustrate their usage.

For and Foreach Loop in C++

Tue, 03 Oct 2023 00:00:00 +0000

When it comes to repetitive tasks in programming, loops are a powerful and versatile tool that can simplify your code and make it more efficient. In C++, two commonly used loops are the for loop and the for each loop. In this comprehensive guide, we’ll explore both types of loops in C++ and provide you with various examples to help you master their usage.

Forward Declaration in C++

Sun, 01 Oct 2023 00:00:00 +0000

In C++, `forward declaration`` is a powerful tool that allows you to declare the existence of various entities before providing their full definitions. This technique is particularly useful for resolving circular dependencies, improving code organization, and optimizing compile times. In this blog post, we will explore forward declaration for a wide range of C++ entities, including classes, structs, enums, functions, variables, namespaces, class templates, and even friend functions.

Enum vs Enum Class in C++

Fri, 22 Sep 2023 00:00:00 +0000

In C++, enumerations (enums) are a powerful tool for creating named sets of integer constants. They help improve code readability and maintainability by providing meaningful names to numeric values. However, C++ offers two ways to define enums: the traditional enum and the more modern enum class. In this blog, we’ll explore the differences between these two options and when to use each with the help of examples.

Let vs Var vs Const in JavaScript

Thu, 21 Sep 2023 00:00:00 +0000

JavaScript is a versatile and widely used programming language that offers multiple ways to declare variables, including let, var, and const. Each of these declarations serves a specific purpose and has its own scope and behavior. In this blog post, we’ll dive into the differences between let, var, and const in JavaScript with examples to help you understand when and how to use them effectively.

UPROPERTY in Unreal

Thu, 07 Sep 2023 00:00:00 +0000

Unreal Engine, renowned for its capabilities in creating visually stunning and highly interactive games and simulations, relies on several core features to achieve its potential. Among these, Unreal Property Specifiers, or UPROPERTY, stand out as a powerful tool for developers.

FString vs FName vs Text in Unreal

Wed, 06 Sep 2023 00:00:00 +0000

Unreal Engine, developed by Epic Games, is a popular game engine that powers many successful video games and interactive experiences. When working with Unreal Engine, you often encounter various data types for handling text and strings, including FString, FName, and Text. In this blog post, we’ll dive into these three text-related data types, explore their differences, and provide examples of when to use each one.

Nested Function in JavaScript

Fri, 18 Aug 2023 00:00:00 +0000

JavaScript is a versatile and widely used programming language that empowers developers to create interactive and dynamic web applications. One of its powerful features is the ability to define functions within functions, known as nested functions. This concept can be a bit tricky to grasp at first, but once understood, it opens the door to more organized and modular code. In this blog, we’ll dive into nested functions in JavaScript, provide examples to illustrate their usage, and explore the benefits they bring to your codebase.

Date Object in JavaScript

Thu, 17 Aug 2023 00:00:00 +0000

Dates and time are fundamental concepts in programming, essential for tasks ranging from displaying the current date on a webpage to performing complex date calculations. JavaScript offers a powerful Date object that enables developers to work with dates, times, and time zones seamlessly. In this comprehensive guide, we’ll explore the Date object in JavaScript, cover its methods and properties, and provide a wide range of examples showcasing various date-related operations and formatting options.

Map vs Object : JavaScript

Wed, 16 Aug 2023 00:00:00 +0000

In JavaScript, data structures play a vital role in organizing and manipulating data efficiently. Two commonly used data structures for storing key-value pairs are the Map and the Object. While they might seem similar at first glance, each has distinct features and use cases that make them suitable for different scenarios. In this blog post, we’ll delve into the Map and Object in JavaScript, providing examples that showcase their strengths and helping you make informed decisions when choosing the right data structure for your specific needs.

This Keyword in JavaScript

Tue, 15 Aug 2023 00:00:00 +0000

JavaScript is a versatile and dynamic programming language used extensively for web development. One of its key features is the this keyword, which plays a crucial role in determining the context of function execution. Understanding how this works is essential for writing clean and efficient JavaScript code. In this blog post, we’ll dive deep into the this keyword, exploring its behavior and providing detailed examples to clarify its usage.

DrawDebugCylinder in Unreal

Mon, 14 Aug 2023 00:00:00 +0000

Unreal Engine is renowned for its powerful debugging and visualization tools that aid game developers in creating immersive and visually stunning experiences. One such tool that stands out is DrawDebugCylinder, a function that allows you to draw cylinder-shaped debug lines in your game world. In this blog post, we will dive into the details of DrawDebugCylinder in Unreal Engine using C++, including its function signature, parameter explanation, necessary headers, and real-world examples.

DrawDebugSphere in Unreal

Sat, 12 Aug 2023 00:00:00 +0000

Unreal Engine is a powerful and versatile game development framework that empowers developers to create stunning and immersive worlds. When it comes to debugging and visualizing game mechanics, Unreal Engine provides a variety of helpful tools, and one of them is DrawDebugSphere. In this blog post, we’ll delve into the details of DrawDebugSphere in Unreal Engine using C++, understand its function signature and parameters, explore the necessary headers to include, and provide real-world examples to showcase its usage.

DrawDebugLine in Unreal

Thu, 10 Aug 2023 00:00:00 +0000

Debug visualization is a crucial aspect of game development, aiding programmers and artists in comprehending the behavior and interactions of various game elements. Unreal Engine offers a suite of debugging tools, and one such tool is the DrawDebugLine function. In this blog, we’ll delve into the usage of DrawDebugLine in Unreal Engine using C++, accompanied by illustrative examples.

Set in JavaScript

Tue, 08 Aug 2023 00:00:00 +0000

When it comes to managing collections of unique values in JavaScript, the Set object is a hidden gem that can greatly simplify your code and enhance your data handling. In this blog post, we’re going to delve into the world of Sets, explore their features, and provide real-world examples of how you can leverage their power in your JavaScript projects.

Map in JavaScript

Sun, 06 Aug 2023 00:00:00 +0000

In the world of JavaScript, data manipulation is a crucial skill for developers. While arrays and objects are common choices for storing data, the Map data type is a powerful alternative that offers unique advantages. In this blog post, we’ll embark on a journey to explore the Map data type, understand its features, and showcase practical examples of how it can be employed to enhance your JavaScript code.

Map function in JavaScript

Fri, 04 Aug 2023 00:00:00 +0000

When it comes to working with arrays in JavaScript, the map() function is a versatile and powerful tool that should not be overlooked. This higher-order function allows you to transform each element of an array and create a new array with the transformed values. In this blog post, we’ll dive into the map() function and explore its capabilities with real-world examples.

Bind Function in JavaScript

Mon, 03 Jul 2023 00:00:00 +0000

JavaScript is a versatile programming language that empowers developers to create dynamic and interactive web applications. To harness its full potential, understanding its various features and functions is crucial. One such powerful function is the bind() function. In this blog, we’ll delve into the intricacies of the bind() function in JavaScript, its practical applications, and how it can be effectively utilized in your codebase.

Closures in JavaScript

Sat, 01 Jul 2023 00:00:00 +0000

JavaScript, a language renowned for its versatility, offers a wealth of features that enable developers to create powerful and dynamic applications. Among these features, closures stand as a key concept that can greatly enhance code organization, data privacy, and functionality. In this blog, we’ll embark on a journey into the world of closures in JavaScript, unraveling their intricacies through illustrative examples and exploring their practical applications.

Vector in Java

Tue, 02 May 2023 00:00:00 +0000

Vectors are an important data structure in Java programming that are used to store and manipulate collections of elements. A vector is similar to an array, but with some additional features that make it more flexible and convenient to use. In this blog, we will explore the basics of vectors in Java, how they differ from arrays, and how to use them in your programs.

ArrayList in Java

Mon, 01 May 2023 00:00:00 +0000

ArrayList is one of the most commonly used data structures in Java. It provides a dynamic array implementation that allows you to add and remove elements from the list. The size of the ArrayList can also be dynamically changed based on the number of elements added or removed from the list. In this blog, we will dive into the details of ArrayList in Java, how it works, and some examples of how to use it.

Open Source Contribution

Mon, 01 May 2023 00:00:00 +0000

Android Components (33 Components)

Below animations/loaders were published as android components in JCenter and Maven which can directly be plugged into any android app and use. The source code for every component is also publicly available in the respective GitHub repository. Please note that the recorded gifs below have fps limitation but the actual animations are smoother than the recorded gifs.

Map Implementation in Java

Sat, 29 Apr 2023 00:00:00 +0000

Java provides a powerful data structure called Map, which is used to store key-value pairs. A Map is a collection of unique keys and their corresponding values, and it provides efficient methods to add, remove, and access elements in constant time.

Set Implementation in Java

Fri, 28 Apr 2023 00:00:00 +0000

Set is an interface in Java that represents a collection of unique elements, meaning that no two elements in a set can be the same. Java provides several implementations of Set, each with its own unique features and trade-offs. In this blog post, we will explore the different implementations of Set in Java and their use cases.

Function Expression : JavaScript

Thu, 27 Apr 2023 00:00:00 +0000

JavaScript is a dynamic and versatile programming language that allows developers to create complex and dynamic applications. One of the key features of JavaScript is its ability to use functions as first-class citizens. This means that functions can be assigned to variables, passed as arguments to other functions, and even returned as values from functions. In this article, we’ll take a closer look at function expressions in JavaScript and explore how they can be used in your code.

JavaScript ‘For’ Loop

Wed, 26 Apr 2023 00:00:00 +0000

Loops are an essential part of any programming language, and JavaScript is no exception. One of the most common loops used in JavaScript is the for loop. In this blog, we will focus on the for loop in JavaScript and how it can be used to iterate over an array or object.

Array Operations in JavaScript (Push, Pop, Shift and Unshift)

Tue, 25 Apr 2023 00:00:00 +0000

JavaScript is a powerful programming language that offers several ways to manipulate arrays, which are one of the most commonly used data structures in JavaScript. Four important array manipulation methods are push, pop, shift, and unshift. These methods allow you to add and remove elements from the beginning or end of an array. In this blog, we will discuss these methods and their usage in JavaScript.

Destructuring Declarations in Kotlin

Mon, 24 Apr 2023 00:00:00 +0000

Sometimes it’s easy to destructure an object into multiple variables of different properties instead of calling it again and again using . operator on the property or instance itself. It is beneficial for a few reasons like,

Equality ('=' vs '==' vs '===') in JavaScript

Mon, 24 Apr 2023 00:00:00 +0000

In JavaScript, there are three types of equality operators: =, ==, and ===. Each of these operators has a different purpose and can lead to different results when used. Understanding the differences between these operators is essential for writing efficient and reliable code in JavaScript.

Nested Class vs Inner Class : Kotlin

Sat, 22 Apr 2023 00:00:00 +0000

Nested and Inner classes are two important concepts in Kotlin that allow developers to organize and structure their code in a more effective way. In this blog, we’ll explore these concepts and understand how they can be used in Kotlin.

Echoes

Thu, 27 Oct 2022 00:00:00 +0000

Speaker at Droidcon London 2022

Thu, 27 Oct 2022 00:00:00 +0000

Round vs Floor vs Ceil : Swift

Tue, 21 Jun 2022 00:00:00 +0000

Rounding up to the nearest Integer value functionality is something required a lot of times. Swift has a few inbuilt functions which can do the rounding up for us but they are a bit confusing. To decide when to use what, we need to understand which rounding function rounds up in which direction and which data types it can round up.

Safe calls(?.) vs Nil checks(!.) in Swift

Sat, 18 Jun 2022 00:00:00 +0000

In Swift, the type system distinguishes between references that can hold nil (nil references) and those that can not (non-nil references).

Default vs Optional vs Explicit Non-nil Variables: Swift

Fri, 17 Jun 2022 00:00:00 +0000

In Swift, we can differentiate the variables into three different categories based on their possible values.

The variable can be of default type, optional type or an explicit non-nil type.

Question Mark (? vs ?. vs ?? vs ? :) in Swift

Thu, 16 Jun 2022 00:00:00 +0000

In Swift, the question mark works differently in different situations or when clubbed with some other keywords. It sometimes denotes the variable type as optional or sometimes being used for optional chaining.

Kotlin Count Function

Mon, 13 Jun 2022 00:00:00 +0000

The collection is something which is used by almost everyone. It makes our life easy. List, Set and Map are the best examples of them.

Plus(+) and Minus(-) Operator : Kotlin

Wed, 18 May 2022 00:00:00 +0000

The collection is something which is used by almost everyone. It makes our life easy. List, Set and Map are the best examples of them.

Filter Operator : Kotlin

Sun, 01 May 2022 00:00:00 +0000

The collection is something which is used by almost everyone. It makes our life easy. List, Set and Map are the best examples of them.

Map Operator : Kotlin

Sat, 23 Apr 2022 00:00:00 +0000

The collection is something which is used by almost everyone. It makes our life easy. List, Set and Map are the best examples of them.

Math.round vs Math.floor vs Math.ceil : Kotlin

Mon, 11 Apr 2022 00:00:00 +0000

Rounding up to the nearest Integer value functionality is something required a lot of times. Kotlin has a few inbuilt functions which can do the rounding up for us but they are a bit confusing. To decide when to use what, we need to understand which rounding function rounds up in which direction and which data types it can round up.

Double vs Float : Swift

Sun, 10 Apr 2022 00:00:00 +0000

Swift has two data types (Double and Float) to hold the decimal values. Both of them hold the same decimal type values but have some differences.

For-in vs For-each in Swift

Sun, 10 Apr 2022 00:00:00 +0000

For-in and for-each are different variants of for loops in swift which are used to iterate over a range, set or dictionary. Both provide the same functionality but has a few limitations or differences when it comes to conditional access.

Custom Object in UserDefaults : Swift

Sat, 09 Apr 2022 00:00:00 +0000

In continuation to my previous blog UserDefaults in Swift, where we understand the basic functionality of UserDefaults, we’ll try to understand today how can we store custom objects in UserDefaults.

Custom Object in UserDefaults : Swift

Sat, 09 Apr 2022 00:00:00 +0000

This particular script will help you to store and retrieve custom class or struct objects in UserDefaults.

For further explaination on how this works, please read the article Custom Object in UserDefaults : Swift.

UserDefaults in Swift

Thu, 24 Mar 2022 00:00:00 +0000

A small set of data is required to be stored and accessed very frequently and need to be persisted across sessions or app launches. One way of keeping them is using a local database like core data in an iOS app. But core data is helpful in the case of tables and queries. There is another way to store a small set of data, UserDefaults.

UISwitch Value Change Listener : Swift

Sun, 20 Mar 2022 00:00:00 +0000

Adding an value change event to a UISwitch is something that is required most of the time. For views like UISwitch, we can connect an IBAction with the event type as value changed and get a callback for the value changed.

UISwitch Value Change Listener : Swift

Sun, 20 Mar 2022 00:00:00 +0000

This particular script will help you to implement a Value Change listener to all UISwitch and its subclasses in a clean way.

UIDatePicker Date Change Listener : Swift

Wed, 09 Mar 2022 00:00:00 +0000

Adding an editing event to a UIDatePicker is something that is required most of the time. For views like UIDatePicker, we can connect an IBAction with the event type as value changed and get a callback for the value changed.

UIDatePicker Date Change Listener : Swift

Wed, 09 Mar 2022 00:00:00 +0000

This particular script will help you to implement a Date Change listener to all UIDatePicker and its subclasses in a clean way.

UITextField Text Listener : Swift

Tue, 08 Mar 2022 00:00:00 +0000

Adding an editing event to a UITextField is something that is required most of the time. For views like UITextField, we can connect an IBAction with the event type as editing did end or value changed and get a callback for editing finished or value changed.

UITextField Text Listener : Swift

Tue, 08 Mar 2022 00:00:00 +0000

This particular script will help you to implement a Text listener to all UITextField and its subclasses in a clean way.

Switch Statement in Swift

Sun, 27 Feb 2022 00:00:00 +0000

The switch statement in Swift is used to execute a particular block of code based on multiple conditions. A switch statement is useful for more than one condition. For one or two conditions, if-else is a better option but for conditions more than that, a switch statement is a better option.

Kotlin Range Operator

Sat, 15 Jan 2022 00:00:00 +0000

Range Operator in Kotlin is a basic operator that is used to operate over a range. A range can be defined with a start value and an end value with and without inclusion.

Iterators in Kotlin

Mon, 20 Dec 2021 00:00:00 +0000

Collections (Sets, Maps and Lists) are something we use daily. Traversing (Iteration) is the most common operation we perform over any collection.

Swift Range Operators

Tue, 05 Oct 2021 00:00:00 +0000

Range Operator in Swift is a basic operator that is used to operate over a range. There are multiple types of range operators where we can include or exclude the upper range. Or we can start the range with some value or can end before some max value.

The range operators can be used with for loops, if conditions, switch conditions or even in array iteration. First, let to see a basic example of a range operator.

Swift ‘For’ loop

Fri, 10 Sep 2021 00:00:00 +0000

For loops are used by every developer regularly. There is for-in as well as a for-each loop in Swift which has a bit different syntaxes. Both of them are used to iterate over a range, array, set or dictionary but have a bit different syntaxes.

lazy Property in Swift

Sun, 05 Sep 2021 00:00:00 +0000

Object creation is a heavy process. When we create a class object, all the public and private properties of that class are initialised inside the constructor. Every variable inside a class initialisation requires a certain amount of time to allocate the memory on the heap and hold its reference on the stack. The more variables, the more time it may take but since the time is in microseconds or even less, it’s not observable.

lateinit vs lazy Property in Kotlin

Sun, 29 Aug 2021 00:00:00 +0000

Since object creation is a heavy process as it initialises all the public and private properties defined in that class when the constructor is called, Kotlin has few ways to initialise properties later when required. We already discussed lateinit properties and lazy properties.

lazy Property in Kotlin

Wed, 04 Aug 2021 00:00:00 +0000

Native Android Receive Text from Other Apps in Unity

Sat, 26 Jun 2021 00:00:00 +0000

In continuation to my previous blog Native Android text sharing in Unity, where we learnt about sharing text from a Unity app targeting the Android platform, let’s try to learn about how can we receive a text from other apps. Accepting a text from other apps is not that common but sometimes location-based games required to accept text or location shared from other apps. There can be a generic use case also where we want to accept some text from other apps for any purpose.

Custom Android Manifest File in Unity

Sat, 29 May 2021 00:00:00 +0000

The Android manifest file describes essential information about your app to the Android build tools, the Android operating system, and Google Play. Every Android app or unity app running on the Android platform must have a Manifest file. The manifest file contains information about package name, permissions, application name, icon, activities, services, providers and much more.

Lerp Function : Unity

Sat, 29 May 2021 00:00:00 +0000

In game development, one of the most common problems is the smooth transition of objects from one position to another. A linear interpolation or Lerp function is a popular technique used to achieve this in Unity. In this blog post, we will explore the lerp function in Unity and its implementation.

Typecast Android Object in Untiy

Fri, 28 May 2021 00:00:00 +0000

In continuation to previous my previous blogs, where we learnt about how can we use AndroidJavaClass and AndroidJavaObject to achieve simple native Android functionality in Unity, We will move one step ahead and see how can we typecast one Android object to another in Unity.

Typecast Android Object in Untiy

Fri, 28 May 2021 00:00:00 +0000

This particular script will help you to typecast one Android/Java object into another in Unity.

For further explaination on how this works, please read the article Native Android in Unity.

Custom Android Manifest File in Unity

Fri, 21 May 2021 00:00:00 +0000

This particular xml is an example of custom Android Manifest file which can be used in unity.

For further explaination on how this works, please read the article Custom Android Manifest File in Unity.

Why with function is not an Extension to Template class?

Mon, 10 May 2021 00:00:00 +0000

After reading my last blog about Kotlin with function, a lot of developers have asked me about, why with is not an extension to Template class like other scope functions?

Kotlin run function

Sun, 09 May 2021 00:00:00 +0000

Kotlin has made our life very easy by providing features like extension functions, nullability check and much more. One such kind of really helpful feature is Scope functions. Once you understand what scope functions are, you will not able to resist yourself from using them.

Kotlin with function

Tue, 04 May 2021 00:00:00 +0000

Kotlin also function

Thu, 29 Apr 2021 00:00:00 +0000

In continuation to my previous post where I explained about Kotlin let function and Kotlin apply function, let’s try to understand today about also function today.

Why Map does not extend Collection interface?

Fri, 23 Apr 2021 00:00:00 +0000

Collections in any language is an interface that stores similar data type objects and provides an iteration functionality. The common extensions of Collection are List and Set.

any(), none() & all() : Kotlin

Tue, 20 Apr 2021 00:00:00 +0000

Kotlin is a powerful language that reduces a lot of boilerplate code required to perform basic operations in comparison to Java. The classic examples for the same are any, non and all functions which were added to the Iterable interface and Map interface.

if vs if let vs guard let in Swift

Fri, 16 Apr 2021 00:00:00 +0000

if let and guard let are two conditional operators or condition checker which make our life super easy. Other languages have only if as condition checker but swift provides if let as well as guard let also which are operationally same but a bit different in functionality.

Kotlin : Single Expression Function

Tue, 13 Apr 2021 00:00:00 +0000

Kotlin is a powerful language that reduced a lot of boilerplate code when compared to Java. The single expression function is the same in terms of reducing the boilerplate code.

Reified : Kotlin

Sat, 06 Mar 2021 00:00:00 +0000

Before we learn about reified,

Generics in any language is the powerful features that allow us to define classes, methods and properties which are accessible using different data types while keeping a check of the compile-time type safety.

Kotlin Enum Classes

Wed, 16 Dec 2020 00:00:00 +0000

Enums are special classes which limit the possible values of an object for that class. The possible values defined for that class are final or unchangeable.

UIView ClickListener : Swift

Mon, 14 Dec 2020 00:00:00 +0000

Adding a click event to a UIView is something that is required most of the time. For views like UIButton, we can connect an IBAction with the event type and detect the click events but sometimes we need it for Lable or even other views.

UIView ClickListener : Swift

Mon, 14 Dec 2020 00:00:00 +0000

This particular script will help you to implement a Click listener to all UIView and its subclasses in a clean way.

Variable vs Object vs Reference

Fri, 04 Dec 2020 00:00:00 +0000

Variables, Objects and References, we frequently listen to these terms while development but usually gets confused between them.

Let’s try to understand a very basic definition along with an example for all three. The concept is similar in any object-oriented programming language but for reference, I’ll be using Java examples. Feel free to comment below if you need examples in any specific language.

Native Android text sharing to Whatsapp contact in Unity

Thu, 03 Dec 2020 00:00:00 +0000

In the previous blogs, we learnt about how can we trigger native Android text, image or any other format file sharing in Unity App. A lot of you have asked me about how can we share some text directly to a WhatsApp contact.

Native Android text sharing to Whatsapp contact in Unity

Thu, 26 Nov 2020 00:00:00 +0000

This particular script will help you to implement a text message sharing directly to a WhatsApp contact in Unity.

For further explaination on how this works, please read the article Native Android text sharing to Whatsapp contact in Unity.

Android : Share message directly to whatsapp contact

Mon, 23 Nov 2020 00:00:00 +0000

This particular script will help you to implement a text message sharing directly to a WhatsApp contact in Android.

For further explaination on how this works, please read the article Android : Share message directly to whatsapp contact.

The power of Camera APIs and OpenGL all together

Sat, 07 Nov 2020 00:00:00 +0000

Are you using the best out of your device camera and GPU in your app?
Do you know how camera frames are drawn on the screen?
Do you think your camera should do way more than just clicking a picture?
Did you ever try to process the frames like applying filters or beautification before previewing it?
How a view or camera frame is drawn on the screen?
What is OpenGL? How OpenGL controls GPU rendering?
What are vertex and fragment shaders? How do they affect the camera frame and preview?
How can we modify the camera frames between camera APIs and previewing? What all can we do with that?

Well, let’s get all these questions answered in the presentation below with our experiences and challenges we’ve faced.

Speaker at Mobile Optimized 2020

Fri, 06 Nov 2020 00:00:00 +0000

The Last Library

Fri, 06 Nov 2020 00:00:00 +0000

How extension functions resolved?

Mon, 26 Oct 2020 00:00:00 +0000

“how are extension functions resolved?”

This question is being asked by almost everyone both in and outside the interviews.

Even I have asked this question to many candidates during the interview.

Infix Notation : Kotlin

Mon, 26 Oct 2020 00:00:00 +0000

Ever imagined calling a public function of a class without dot and parentheses of the parameter in Kotlin. Kotlin provides infix notation with which we can call a function with the class object without using a dot and parentheses across the parameter. Using infix function provides more readability to a function similar to other operators like in, is, as in Kotlin.

Android : Share message directly to whatsapp contact

Fri, 23 Oct 2020 00:00:00 +0000

Whatsapp is something which doesn’t require any introduction. It’s a conversation app used by millions of users across the world. These million users make it unique for developers also to give special attention when it comes to sharing some message through Whatsapp.

Native Android image sharing in Unity using FileProvider

Thu, 15 Oct 2020 00:00:00 +0000

This particular script will help you to implement native Android image sharing using Android’s FileProvider in Unity. This is a fix for “android.os.FileUriExposedException” in Android 8 (Oreo) and above.

Native Android text sharing to particular app in Unity

Mon, 12 Oct 2020 00:00:00 +0000

This particular script will help you to implement native Android text sharing to a particular app in Unity.

We use all the native classes of Android in Unity using AndroidJavaClass and AndroidJavaObject and perform the Android’s ACTION_SEND with EXTRA_SUBJECT and EXTRA_TEXT, and share the content to a particular app with package name.

Native Android image sharing in Unity

Sun, 11 Oct 2020 00:00:00 +0000

This particular script will help you to implement native Android image sharing in Unity.

We use all the native classes of Android in Unity using AndroidJavaClass and AndroidJavaObject and perform the Android’s ACTION_SEND with EXTRA_SUBJECT, EXTRA_TEXT and EXTRA_STREAM. The content type is set to image/png in the below example but you can change it to any type and share other formats also.

Native Android text sharing in Unity

Sat, 10 Oct 2020 00:00:00 +0000

This particular script will help you to implement native Android text sharing in Unity.

We use all the native classes of Android in Unity using AndroidJavaClass and AndroidJavaObject and perform the Android’s ACTION_SEND with EXTRA_SUBJECT and EXTRA_TEXT.

Native Android in Unity

Fri, 09 Oct 2020 00:00:00 +0000

This particular script will help you to implement basic native Android in Unity.

This show an example of showing a native Android’s Toast in unity using AndroidJavaClass and AndroidJavaObject.

Kotlin Extension Property

Sun, 13 Sep 2020 00:00:00 +0000

Extension functions are really-really helpful while writing code in Kotlin. You don’t have to extend the class but you can add the functionality to even a final (non-open) class which will be resolved statically but how about extension properties.

Native Android text sharing to particular app in Unity

Fri, 14 Aug 2020 00:00:00 +0000

In the previous blogs Native Android text sharing in Unity and Native Android image sharing in Unity we learnt about how to share some text or screenshot to other apps in a Unity app targeting Android platforms. In this post will target sharing the same text or image to some particular app directly.

Low Level Design : Tic-Tac-Toe

Sun, 26 Jul 2020 00:00:00 +0000

System designing is the process of designing system elements such as architectures, modules, components, different interfaces of those components. Its the process of defining the lowest level entities in a software. It is the backbone of any software.

FireBlock

Sat, 11 Jul 2020 00:00:00 +0000

How can I migrate my Android code from Java to Kotlin?

Sat, 11 Jul 2020 00:00:00 +0000

In continuation of the previews session for Google Accelerator program on the topic Java or Kotlin. what do you use? today we are going to look at how can you migrate the codebase from java to Kotlin and what are the common mistake made by developers while doing the same.

Speaker at Android Bootcamps part of Google for Startup Program

Sat, 11 Jul 2020 00:00:00 +0000

Lets Challenge

Sun, 05 Jul 2020 00:00:00 +0000

Java or Kotlin, What do you use?

Sat, 06 Jun 2020 00:00:00 +0000

Kotlin is something which was introduced as an official language for Android development in Google I/O 2017. Since then it has grown and evolved a lot. It has multiple benefits and on top of everything, it’s really easy to use.

Speaker at Android Bootcamps part of Google for Startup Program

Sat, 06 Jun 2020 00:00:00 +0000

UFO

Sat, 06 Jun 2020 00:00:00 +0000

Object-Oriented Programming (OOP) Concepts

Sat, 30 May 2020 00:00:00 +0000

Object-oriented programming (OOP) concepts are something which are fundamentals of any Object-oriented programming language. These concepts give you the power to structure your code in such a way that it’s well optimized, reusable, efficient, future proof and much more.

Kotlin apply function

Mon, 27 Apr 2020 00:00:00 +0000

In continuation to my previous post where I explained about Kotlin let function, let’s try to understand today about apply function today.

Collections in Kotlin

Wed, 22 Apr 2020 00:00:00 +0000

Collections are a common concept for most programming languages. It is a way of storing similar data types in a single object and iterate over it. Similar to any other language, Kotlin also has Collection defined in kotlin.collections package.

Partial class in C# (partial modifier)

Sun, 29 Mar 2020 00:00:00 +0000

Think about a situation where two or more developers need to modify the same class or add new functionalities to the same class. Or assume they need to implement interfaces to the same class. There will be a merge conflict which needs to be resolved manually or using some tool.

Destructuring Declarations in Kotlin

Tue, 03 Mar 2020 00:00:00 +0000

We all know about three classes Any, Unit and Nothing in Kotlin which have their own functionality and use cases but we usually confuse between the differences among them and when to use what.

Why let function is an Extension to Template class?

Sat, 29 Feb 2020 00:00:00 +0000

After reading my last blog about Kotlin let function, a lot of developers have asked me about, why let is an extension to Template class but not to Any class?

Kotlin let function

Tue, 25 Feb 2020 00:00:00 +0000

Inheritance vs Extension functions

Mon, 02 Dec 2019 00:00:00 +0000

We all know about inheritance which is there in the OOPs concept where one can extend a class and add functionality to it. In the new programming languages, there is something called as extension functions which can add a functionality to an existing class without extending it.

partition() : Kotlin

Wed, 23 Oct 2019 00:00:00 +0000

The collection is something which is used by almost everyone. It makes our life easy. List, Set and Map are the best examples of them. Even the programming language in which you are writing code provides you with a few basic operations that can be performed on those collections, But sometimes you need even more operations.

Speaker at Droidcon Greece

Tue, 24 Sep 2019 00:00:00 +0000

Speaker at Droidcon Vienna

Thu, 19 Sep 2019 00:00:00 +0000

Jaipur Metro

Mon, 09 Sep 2019 00:00:00 +0000

Speaker at Droidcon Lisbon

Mon, 09 Sep 2019 00:00:00 +0000

Speaker at DroidJam Bangalore

Sat, 31 Aug 2019 00:00:00 +0000

SpaceShooter

Sat, 24 Aug 2019 00:00:00 +0000

Speaker at MobileConf 2019

Sat, 24 Aug 2019 00:00:00 +0000

Basketball 3D

Sun, 04 Aug 2019 00:00:00 +0000

Cut your APK Size with features on demand

Sun, 04 Aug 2019 00:00:00 +0000

Do APK or app size matters?
Does a user think about the APK size before downloading it?
Does a user think about space, an app occupying on the phone?
Is your App size is more than just a few MBs?

What if we provide very basic functionality and let the user decide whether he wants the advanced or additional functionality or not?

Speaker at GDG Devfest Kolkata

Sun, 04 Aug 2019 00:00:00 +0000

Native Android image sharing in Unity using FileProvider

Tue, 28 May 2019 00:00:00 +0000

While implementing native sharing using my previous post, Native Android image sharing in Unity we saw an exception android.os.FileUriExposedException in Android 8 (Oreo) and above.

takeIf and takeUnless : Kotlin

Fri, 10 May 2019 00:00:00 +0000

Ever thought of chaining an if condition?

What if we can chain the if condition also and moves or executes the next code in the chain only if the condition is true?

Inline function : Kotlin

Fri, 05 Apr 2019 00:00:00 +0000

What is inlining?

Inlining is basically requesting the compiler to copy the (inlined) code at the calling place.

Why it is required?

When a program is executed and a function is called, CPU stores the memory address of the instruction following the function call, copies the arguments of the function into a stack and finally transfers control to the specified function. The CPU then executes the function code, stores the function return value in a predefined memory location/register and returns control to the calling function.

mutating in Swift

Fri, 29 Mar 2019 00:00:00 +0000

As we all know, Classes are reference type whereas Structures and Enumerations are of a value type in swift. What does that mean is that a class object shares a single instance of the object and passes the same reference if passed to any function or new object whereas the value type is the one which creates a copy of it and passes only the value.

‘inout’ in Swift

Fri, 01 Mar 2019 00:00:00 +0000

Recently, while working with swift I came up with a use case where I need to modify the variable passed as an argument to a function. Eventually, all the variables passed to a function are of an immutable type which cannot be changed which is similar to a let variable. If it’s a class object, you cannot create a new object but you can manipulate the properties of that class object or you can call any function with that object.

Qualified ‘this’ in Kotlin

Thu, 07 Feb 2019 00:00:00 +0000

The only thing we learnt about this pointer in other languages is “this is an implicit pointer which points to the calling object”. As clear from the definition, it points to the object which calls the respective function or property.

Type Aliases in Kotlin

Sun, 23 Dec 2018 00:00:00 +0000

Life is painful when you have two or more classes with the same name but different package name and you have to use them both in the same place.

Extensions in Kotlin

Fri, 26 Oct 2018 00:00:00 +0000

Have you ever felt some useful functionality missing in an existing class?

The class could be in the libraries provided by language also.

Variable number of arguments (vararg) : Kotlin

Sat, 13 Oct 2018 00:00:00 +0000

Sometimes we need a function where we can pass n number of parameters, and the value of n can be decided at runtime. Kotlin provides us to achieve the same by defining a parameter of a function as vararg. We can pass n number of parameters to a vararg variable of the defined datatype or even of a generic type.

Object Expression in Kotlin

Sat, 06 Oct 2018 00:00:00 +0000

Sometimes we need to create an object of some class with slight modification, without explicitly declaring a new subclass for it. Java handles this case with anonymous inner classes. Kotlin uses object expression to achieve the same functionality.

Equality in Kotlin (‘==’, ‘===’ and ‘equals’)

Tue, 04 Sep 2018 00:00:00 +0000

We often need to compare the data of two variables or objects or the references of two objects in Kotlin. This brings in another question, which equality check should we use in which case.

Pair and Triple in Kotlin

Fri, 17 Aug 2018 00:00:00 +0000

It is a very common use case where we want to return two values from a method, can be either of same data type or can be of different data types.

Native Android image sharing in Unity

Fri, 10 Aug 2018 00:00:00 +0000

In continuation to my previous blogs Native Android in Unity and Native Android text sharing in Unity, will consider another example of native Android screenshot sharing functionality in the unity app.

Extensions as Members : Kotlin

Fri, 27 Jul 2018 00:00:00 +0000

In continuation to my last Medium post Extensions in Kotlin where I explained what are Extensions and how do we use it, this medium post will cover the implementation of Extensions as members of some other class.

Companion object in Kotlin

Fri, 13 Jul 2018 00:00:00 +0000

Unlike Java or C#, Kotlin doesn’t have static members or member functions. Kotlin recommends to simply use package-level functions instead.

Computed Property in Swift

Fri, 13 Jul 2018 00:00:00 +0000

Native Android text sharing in Unity

Fri, 29 Jun 2018 00:00:00 +0000

In continuation to my previous blogs Native Android in Unity, will consider another example of native Android text sharing functionality in the unity app. This is a very common requirement in any unity app targeting Android platform to share the high score or challenge other players with a text message or a screenshot of the high score. The sharing can be done via any of the app available on the user’s device which supports sharing.

Native Android in Unity

Fri, 22 Jun 2018 00:00:00 +0000

While developing unity games in C# targeting android platform, we always want to use few native android features in our game. These features can be showing notifications on certain actions in the game or can be sharing the high score with other players and inviting them to try our game using android native share. Android gives us all the possibilities to achieve these native android functionalities in unity app using C#.

The Nothing Type : Kotlin

Fri, 15 Jun 2018 00:00:00 +0000

What if I say there is a class called Nothing in Koltin.

And What does it do? Nothing.

The time I read about the class Nothing for the first time, it sounds interesting to me. This class has no instance and it is used to represent a value which never exists. This class is also used to represent a return type from a method that will never return.

Label Reference in Kotlin

Fri, 08 Jun 2018 00:00:00 +0000

Any expression in Kotlin may be marked with a label. This can be used to as an identifier. A label can be defined in Kotlin using label name followed by @ sign in front of any expression.

Tuple in Swift

Mon, 21 May 2018 00:00:00 +0000

It is a very common use case where we want to return two values from a method, can be either of same data type or can be of different data types.

Property, Getter and Setter : Kotlin

Sat, 03 Mar 2018 00:00:00 +0000

I started developing Android apps in Java where encapsulation of object-oriented programming was achieved through declaring variables as private fields with their getter and setter as public methods. The moment I converted my Java code to Kotlin, it replaced each variable along with its getter and setter with just a single line of code. Although I was amazed at how can a single line of code replace the complete variable with the same functionality, but later on understanding it, I started liking writing the code in Kotlin. Let’s understand how it works in Kotlin.

Kotlin ‘For’ loop

Fri, 12 Jan 2018 00:00:00 +0000

While converting all my java code to kotlin, one of the strange syntax change I observed was the for loop in both the languages. Later I realized in Kotlin, there are few concepts which are completely different from java or any other another language for loops.

when operator in Kotlin

Thu, 11 Jan 2018 00:00:00 +0000

when operator is a replacement of switch operator in other languages.

when operator matches its argument with all the branches until it matches with anyone, else it executes the else block.

‘in’ operator in Kotlin

Fri, 24 Nov 2017 00:00:00 +0000

‘in’ operator in Koltin is used to check the existence of particular variable or property in a Range or Collection whereas a ‘!in’ operator is just a not of ‘in’ operator and returns true if the condition is false. It can also be used to iterate over a range or collection.

TypeCheck (‘is’) and Cast (‘as’) in Kotlin

Thu, 23 Nov 2017 00:00:00 +0000

Type check is a way of checking the type(DataType) or Class of a particular instance or variable while runtime to separate the flow for different objects. In few languages, it’s also denoted as Run Time Type Identification (RTTI).

Safe calls(?.) vs Null checks(!!) in Kotlin

Mon, 13 Nov 2017 00:00:00 +0000

In Kotlin, the type system distinguishes between references that can hold null (nullable references) and those that can not (non-null references). For example, a normal property can’t hold a null value and will show a compile error.

lateinit Property in Kotlin

Fri, 10 Nov 2017 00:00:00 +0000

There can be two ways to declare and initialize a var property

var variable : CustomClass = CustomClass() 
 or
var variable : CustomClass? = null

The first property is initialized while declaration itself and doesn’t require a null check (?.) while using it.

Higher-order functions in Kotlin

Tue, 07 Nov 2017 00:00:00 +0000

What is a higher-order function?

In Kotlin, a function can be passed as a parameter or can be returned from a function, the function which does the same is known as a higher-order function. In other words, a higher-order function is a function that takes functions as parameters or returns a function.

Backing Field in Kotlin

Sat, 05 Aug 2017 00:00:00 +0000

What is Backing Field ?

Backing field is an autogenerated field for any property which can only be used inside the accessors(getter or setter) and will be present only if it uses the default implementation of at least one of the accessors, or if a custom accessor references it through the field identifier. This backing field is used to avoid the recursive call of an accessor which ultimately prevents the StackOverflowError.