println!("Guess your number!");

let secret_number = rand::thread_rng().gen_range(1..=100);

// 循环处理

loop {

println!("Please input your guess.");

// 变量默认是不可变的immutable，添加mut可以使变量可变；

let mut guess = String::new();

/*

let _ = io::stdin()

.read_line(&mut guess)

.expect("Failed to read line");

/* 在没有use std::io的时候也可以直接使用下面的语句进行替代；

// rust允许用新值来隐藏之前的值，所以这里可以又定义一次guess变量

// 输出错误的时候继续

let guess: u32 = match guess.trim().parse() {

Ok(num) => num,

Err(_) => {

println!("input err: {guess}");

continue;

}

};

// 看起来类似 js的``去格式化字符串

println!("Your guess: {guess}");

/*

match guess.cmp(&secret_number) {

Ordering::Less => println!("small."),

Ordering::Greater => println!("big."),

// 猜对终止循环

Ordering::Equal => {

println!("win!");

break;

}

}

}

println!("study rust example: ");

// guess_game();

// basic_concept::basic_concept::variable::test_variable();

// basic_concept::basic_concept::data_types::test_data_types();

// basic_concept::basic_concept::function::test_function_handle();

// basic_concept::basic_concept::control_flow::test_control_flow_handle();

// ownership::ownership::ownership_test::ownership_test_handle();

// ownership::ownership::reference_borrow::reference_borrow_study();

// ownership::ownership::slice::slice_study();

// struct_related::define_init_struct::define_init_struct_study();

// struct_related::retangle::retangle_struct_study();

// enum_pattern_match::enum_pattern_match::define_enum::define_enum_study();

// enum_pattern_match::enum_pattern_match::enum_usage::use_enum_study();

// enum_pattern_match::enum_pattern_match::option_usage::option_uasge_study();

// enum_pattern_match::enum_pattern_match::match_control_flow::match_control_flow_study();

// enum_pattern_match::enum_pattern_match::if_let_control::if_let_control_study();

// package_crate_module::package_crate_module::package_crate_path::front_of_house_root();

// common_collection::vector_study::vector_usage_study();

// common_collection::string_study::string_usage_study();

// common_collection::hash_map_study::hash_map_usage_study();

// error_handle::panic_unrecoverable::panic_unrecover_error_study();

// error_handle::result_recorverable::result_recover_study();

// generic_traits_lifetime::generic_type_study::generic_type_usage_study();

// generic_traits_lifetime::traits_study::traits_usage_study();

// generic_traits_lifetime::lifetime_study::lifetime_kown_study();

// generic_traits_lifetime::mix_usage::mix_usage_study();

// iterator_closure::closure_study::closures_related_usage();

// iterator_closure::iterator_process_study::iterator_usage();

// smart_pointer::box_pointer::box_pointer_study();

// smart_pointer::deref_trait::deref_trait_study();

// smart_pointer::drop_trait::drop_trait_study();

// smart_pointer::rc_t_count_pointer::rc_t_count_pointer_study();

// smart_pointer::refcell_pointer::refcell_pointer_study();

// smart_pointer::reference_cycle::reference_cycle_study();

// concurrency::thread_create::thread_create_study();

// concurrency::message_thread::messsage_thread_study();

// concurrency::mutex_shared_state::mutex_shared_state_study();

// concurrency::dead_lock::dead_lock_study();

// object_oriented::object_oriented_feature::object_oriented_feature_study();

// object_oriented::trait_object_for_diff_type::trait_object_for_diff_type_study();

// object_oriented::object_oriented_desgin_pattern::object_oriented_desgin_pattern_study();

// pattern_match::pattern_usage_places::pattern_usage_places_study();

// pattern_match::pattern_syntax::pattern_syntax_study();

advance_feature::unsafe_rust::unsafe_rust_study();

advance_feature::advanced_trait::advanced_trait_study();

advance_feature::advanced_type::advanced_type_study();

advance_feature::advanced_function_closures::advanced_function_closures_study();

advance_feature::macros::macros_study();