[macruby-changes] [MacRuby/MacRuby] 37d1d9: improve a performance in String#index when string ...
GitHub
noreply at github.com
Fri Dec 28 18:43:50 PST 2012
Branch: refs/heads/master
Home: https://github.com/MacRuby/MacRuby
Commit: 37d1d93fb97a62449f8ba1559017358ea5e164f2
https://github.com/MacRuby/MacRuby/commit/37d1d93fb97a62449f8ba1559017358ea5e164f2
Author: Watson <watson1978 at gmail.com>
Date: 2012-12-28 (Fri, 28 Dec 2012)
Changed paths:
M string.c
Log Message:
-----------
improve a performance in String#index when string is ascii code range
* before
user system total real
one 0.320000 0.000000 0.320000 ( 0.312905)
small 4.330000 0.000000 4.330000 ( 4.336463)
* after
user system total real
one 0.340000 0.000000 0.340000 ( 0.331335)
small 1.330000 0.000000 1.330000 ( 1.328736)
Test Code:
----
require 'benchmark'
str = "hoge" * 10000 + "\n"
Benchmark.bm(7) do |x|
x.report "one" do
10000.times do
str.index("\n")
end
end
x.report "small" do
10000.times do
str.index("hoge\n")
end
end
end
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