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author | watson1978 <watson1978@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-05-26 17:10:01 +0000 |
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committer | watson1978 <watson1978@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-05-26 17:10:01 +0000 |
commit | 6270d595082b7470851f9815fd279e1ce0c3e214 (patch) | |
tree | bb229d6315e403aa32f3b0f18ae7d683f7ecd89e /.gitignore | |
parent | 43572889b3ecd8442574da98988fa187eaa04169 (diff) |
Improve Array#concat performance if only one argument is given
* array.c (rb_ary_concat_multi): concatenate the array without generating
temporary Array object if only one argument is given.
This is very similar with r58886.
Array#concat will be faster around 19%.
[Fix GH-1634]
### Before
Array#concat 2.187M (± 3.5%) i/s - 10.926M in 5.002829s
### After
Array#concat 2.598M (± 1.8%) i/s - 13.008M in 5.008201s
### Test code
require 'benchmark/ips'
Benchmark.ips do |x|
x.report "Array#concat" do |i|
other = [4]
i.times { [1, 2, 3].concat(other) }
end
end
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58909 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to '.gitignore')
0 files changed, 0 insertions, 0 deletions