mynyml / every

Symbol#to_proc's hot cousin. Simple and elegant alternative to using &:method with enumerables.

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every / benchmarks.rb
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#!/usr/lib/env ruby
 
require 'pathname'
require 'benchmark'
root  =  Pathname(__FILE__).dirname
require  root.join('lib/every.rb')
 
unless defined?(:a.to_proc)
  class Symbol
    def to_proc() proc { |obj| obj.__send__(self) } end
  end
end
 
puts
puts "One call"
n = 100_000
Benchmark.bmbm(15) do |bm|
  bm.report('#map:')            { (0..n).map {|i| i.floor } }
  bm.report('Symbol#to_proc:')  { (0..n).map(&:floor) }
  bm.report('#every:')          { (0..n).every.floor }
end
 
puts
puts "Two calls"
n = 100_000
Benchmark.bmbm(15) do |bm|
  bm.report('#map:')            { (0..n).map {|i| i.floor.next } }
  bm.report('#map (x2):')       { (0..n).map {|i| i.floor }.map {|i| i.next } }
  bm.report('Symbol#to_proc:')  { (0..n).map(&:floor).map(&:next) }
  bm.report('#every:')          { (0..n).every.floor.every.next }
  bm.report('#every (chain):')  { (0..n).every { floor.next } }
end