From 6aa115e41f43b179d4c74526aa250d01e823d48d Mon Sep 17 00:00:00 2001 From: claudiob Date: Fri, 17 Oct 2014 11:38:00 -0700 Subject: Replace (slower) block.call with (faster) yield MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Performance optimization: `yield` with an implicit `block` is faster than `block.call`. See http://youtu.be/fGFM_UrSp70?t=10m35s and the following benchmark: ```ruby require 'benchmark/ips' def fast yield end def slow(&block) block.call end Benchmark.ips do |x| x.report('fast') { fast{} } x.report('slow') { slow{} } end # => fast 154095 i/100ms # => slow 71454 i/100ms # => # => fast 7511067.8 (±5.0%) i/s - 37445085 in 4.999660s # => slow 1227576.9 (±6.8%) i/s - 6145044 in 5.028356s ``` --- activerecord/test/cases/migrator_test.rb | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'activerecord') diff --git a/activerecord/test/cases/migrator_test.rb b/activerecord/test/cases/migrator_test.rb index 9809d83315..f05ca900aa 100644 --- a/activerecord/test/cases/migrator_test.rb +++ b/activerecord/test/cases/migrator_test.rb @@ -357,11 +357,11 @@ class MigratorTest < ActiveRecord::TestCase end private - def m(name, version, &block) + def m(name, version) x = Sensor.new name, version x.extend(Module.new { - define_method(:up) { block.call(:up, x); super() } - define_method(:down) { block.call(:down, x); super() } + define_method(:up) { yield(:up, x); super() } + define_method(:down) { yield(:down, x); super() } }) if block_given? end -- cgit v1.2.3