Ruby 2.6, the latest version of the venerable dynamic language, is now available as a production release.
What’s new in Ruby 2.6
Ruby 2.6 adds an initial implementation of a JIT (just-in-time compiler) to improve performance of program execution. Ruby’s JIT compiler writes C code to disk and produces a C compiler process to generate native code. The JIT compiler is supported when Ruby is built by the GCC compiler, Clang, or Microsoft Visual C++, which must be available at runtime.
Other new features in Ruby 2.6 include:
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