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Hack vs JRuby: What are the differences?
What is Hack? A programming language for HHVM that interoperates seamlessly with PHP. Hack provides instantaneous type checking via a local server that watches the filesystem. It typically runs in less than 200 milliseconds, making it easy to integrate into your development workflow without introducing a noticeable delay.
What is JRuby? A high performance, stable, fully threaded Java implementation of the Ruby programming language. JRuby is the effort to recreate the Ruby (http://www.ruby-lang.org) interpreter in Java. The Java version is tightly integrated with Java to allow both to script any Java class and to embed the interpreter into any Java application. See the docs directory for more information.
Hack and JRuby can be primarily classified as "Languages" tools.
"Interoperates seamlessly with php" is the top reason why over 5 developers like Hack, while over 7 developers mention "Java" as the leading cause for choosing JRuby.
JRuby is an open source tool with 3.32K GitHub stars and 830 GitHub forks. Here's a link to JRuby's open source repository on GitHub.
Groupon, Soundcloud, and Lookout are some of the popular companies that use JRuby, whereas Hack is used by Facebook, Slack, and Wizters. JRuby has a broader approval, being mentioned in 13 company stacks & 4 developers stacks; compared to Hack, which is listed in 8 company stacks and 3 developer stacks.
Pros of Hack
- Interoperates seamlessly with php6
- Open source6
- Backed by facebook5
- HHVM4
- PHP like2
- Great documentation2
- Generics2
- Fast1
- Used by facebook1
- Great type system0
- Easy to learn0
Pros of JRuby
- Java8
- Faster than Ruby7
- Threads3
- JVM3
- Open source2
- Supports native Ruby gems out the box2
- Garbage collection built-in2
- Built-in Testing2
- Deploy as executable jay2
- Great community1