A (hopefully) Fast, (hopefully) Thread safe map inspired by evmap Maven <repositories> <repository> <id>jitpack.io</id> <url>https://jitpack.io</url> </repository> </repositories> <dependency> <groupId>com.github.bowbahdoe</groupId> <artifactId>leftright-map-java</artifactId> <version>0.1.3</version> </dependency> Gradle allprojects { repositories { ... maven { url 'https://jitpack.io' } } } dependencies { implementation 'com.github.bowbahdoe:leftright-map-java:0.1.3' } Leiningen :repositories [["jitpack" "https://jitpack.io"]] :dependencies [[com.github.bowbahdoe/leftright-map-java "0.1.3"]]