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| author | watson1978 <watson1978@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-10-27 14:55:03 +0000 |
|---|---|---|
| committer | watson1978 <watson1978@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-10-27 14:55:03 +0000 |
| commit | b03a44c4ac506f02a164fb5d5e9ce1fdacd546de (patch) | |
| tree | db85f2a234d93cec954776cee6414d9e33ecdd45 /test/ruby/test_variable.rb | |
| parent | fd144546885390d549414e5bc103111c7563be71 (diff) | |
string.c: Improve String#prepend performance if only one argument is given
* string.c (rb_str_prepend_multi): Prepend the string without generating
temporary String object if only one argument is given.
This is very similar with https://github.com/ruby/ruby/pull/1634
String#prepend -> 47.5 % up
[Fix GH-1670] [ruby-core:82195] [Bug #13773]
* Before
String#prepend 1.517M (± 1.8%) i/s - 7.614M in 5.019819s
* After
String#prepend 2.236M (± 3.4%) i/s - 11.234M in 5.029716s
* Test code
require 'benchmark/ips'
Benchmark.ips do |x|
x.report "String#prepend" do |loop|
loop.times { "!".prepend("hello") }
end
end
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60480 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'test/ruby/test_variable.rb')
0 files changed, 0 insertions, 0 deletions