From: nobu.nokada@...
Date: 2002-12-11T15:18:05+09:00
Subject: Re: replacing chars in string

Hi,

At Wed, 11 Dec 2002 14:58:28 +0900,
why the lucky stiff wrote:
>   n = 1000
>   str =  "count=(a+b); if(a<=b) d[i]=10;f(a,b)"
>   test = nil
>   bm do |x|
>       x.report( "chained gsubs:" ) do
>           n.times do
>               test = str.gsub(/,/,' , ').gsub(/\(/,' ( ').gsub(/\)/,' ) ').gsub(/([^<>])=/,'\1 = ').gsub(/;/,";\n")  
>           end
>           # puts
>           # p test
>       end
  x.report( "chained gsubs 2:" ) do
    n.times do
      test = str.gsub(/[,()]/,' \& ').gsub(/([^<>])=/,'\1 = ').gsub(/;/,";\n")  
    end
    # puts
    # p test
  end

With 10,000 iterations:

                      user     system      total        real
chained gsubs:    2.270000   0.020000   2.290000 (  2.306303)
chained gsubs 2:  2.030000   0.040000   2.070000 (  2.066607)
grouped gsub:     5.570000   0.060000   5.630000 (  5.758734)
gsub and case:    3.720000   0.070000   3.790000 (  3.950212)

-- 
Nobu Nakada