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tessi/benchmark.rb

Last active December 24, 2015 09:49
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Revisions

  1. tessi revised this gist Oct 1, 2013. 2 changed files with 3 additions and 3 deletions.
    2 changes: 1 addition & 1 deletion benchmark.rb
    View file
    Original file line number Diff line number Diff line change
    @@ -8,7 +8,7 @@ def use_map_join(arr)

    def use_inject(arr)
    join_str = ', '
    arr.inject("") {|str, arr| str.empty? ? arr[2] : (str << join_str + arr[2])}
    arr.inject(nil) {|str, arr| str ? (str << join_str << arr[2]) : arr[2].dup}
    end

    Benchmark.bm do |bm|
    4 changes: 2 additions & 2 deletions result
    View file
    Original file line number Diff line number Diff line change
    @@ -1,3 +1,3 @@
    user system total real
    map/join 1.440000 0.000000 1.440000 ( 1.450691)
    inject 2.540000 0.040000 2.580000 ( 2.580606)
    map/join 1.440000 0.000000 1.440000 ( 1.441858)
    inject 2.220000 0.000000 2.220000 ( 2.234554)
  2. tessi created this gist Oct 1, 2013.
    26 changes: 26 additions & 0 deletions benchmark.rb
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,26 @@
    require 'benchmark'
    iterations = 10_000
    arr = Array.new(1000) { Array.new(2) << (rand()*100).to_s}

    def use_map_join(arr)
    arr.map {|a| a[2]}.join ', '
    end

    def use_inject(arr)
    join_str = ', '
    arr.inject("") {|str, arr| str.empty? ? arr[2] : (str << join_str + arr[2])}
    end

    Benchmark.bm do |bm|
    bm.report('map/join') do
    iterations.times do
    use_map_join arr
    end
    end

    bm.report('inject') do
    iterations.times do
    use_inject arr
    end
    end
    end
    3 changes: 3 additions & 0 deletions result
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,3 @@
    user system total real
    map/join 1.440000 0.000000 1.440000 ( 1.450691)
    inject 2.540000 0.040000 2.580000 ( 2.580606)