What’s new in this release?


  • Unify Fixnum and Bignum into Integer

Rails is already ready with both forward compatibility, backward compatibility and all around compatible compatibility. Int’ no Fix. Check here for more detail

  • Unicode String case conversion

Performance Improvements

  • Array#max, Array#min are optimized to not create a temporary array under certain conditions

  • More than 25% improvment in speed of accessing instance variable. That is huge.

Checkout https://rubybench.org/ for comparing benchmark results of differnt versions of ruby.

Install 2.4.0preview1 using rvm

1. rvm get head
2. rvm install 2.4.0-preview1

Click here for more details…

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