[macruby-changes] [MacRuby/MacRuby] 6caf47: Performance improvement in String#split(sep, limit...

[noreply at github.com]

  Branch: refs/heads/master
  Home:   https://github.com/MacRuby/MacRuby

  Commit: 6caf474aeed57958f35eee3b1dc4fa4967046170
      https://github.com/MacRuby/MacRuby/commit/6caf474aeed57958f35eee3b1dc4fa4967046170
  Author: Watson <watson1978 at gmail.com>
  Date:   2011-10-24 (Mon, 24 Oct 2011)

  Changed paths:
    M string.c

  Log Message:
  -----------
  Performance improvement in String#split(sep, limit). reserved an array size which is result when passed a limit.

* before
      user     system      total        real
  1.710000   0.040000   1.750000 (  1.477479)

* after
      user     system      total        real
  1.270000   0.050000   1.320000 (  1.076221)

----
require 'benchmark'

Benchmark.bm do |x|
  str = "abcdefg0123456789\n" * 2000
  x.report do
    1000.times do
      str.split("\n", 1000)
    end
  end
end