What's New in Ruby 2.6
Sam Backus
@SamBackus
Samuel.Backus@gmail.com
Happy Holidays!
Follow along
$ rbenv install 2.6.0
or
$ rvm install 2.6.0
Speed improvements!
- Proc#call is 1.4x faster
- block.call is 2.4x faster when passed a block
- Transient Heap is introduced, making small and short lived hash objects 2x faster.
- Native implementations of coroutines to improve context switching performance of Fiber significantly.
Speed improvements!
New JIT compiler
slower startup time
faster runtime
New JIT compiler
New JIT compiler
New JIT compiler
How to use: Just specify --jit in command line or $RUBYOPT environment variable
RubyVM::AbstractSyntaxTree
yield_self aliased to then
Kernel#yield_self
Endless ranges (1..)
Enumerable#chain
and
Enumerator#+
Add function composition operators << and >> to Proc and Method
Array#union
Array#difference
Array#filter is a new alias for Array#select
Merge Bundler as Default gem
You no longer need to gem install bundler
References:
- Ruby 2.5.0 announcement
- Ruby 2.6.0-rc2 announcment
- RubyConf 2018 - The secret power of Ruby 2.6: JIT by Takashi Kokubun
- What's New in Ruby 2.6 by Guy Maliar
- Ruby's new JIT compiler by Shannon Skipper
- Yield_self in Ruby 2.5 by Michal Lomnicki
-
Ruby 3x3: Matz, Koichi, and Tenderlove on the future of Ruby Performance