From: Harry Kakueki <list.push@...>
Date: 2009-08-28T21:02:32+09:00
Subject: Re: I need a string#all_indices method--is there such a thing?

> Does this do what you want?
>
> class String
>  def all_indices(reg)
>    tmp,idx = [],[]
>    (0...self.length).each{|x| tmp[x] = self[x..-1]}
>    tmp.each_with_index{|y,i| idx << i if y =~ /\A#{reg}/}
>    idx
>  end
> end
>
> p "this is a test string for the ts in the worldt".all_indices(/th/)
> #> [0, 26, 36]
>
>
> Harry
>

Sorry, it looks like I had an unnecessary line in there.

class String
  def all_indices(reg)
    idx = []
    (0...self.length).each{|x| idx << x if self[x..-1] =~ /\A#{reg}/}
    idx
  end
end

p "this is a test string for the ts in the worldt".all_indices(/th/)
#> [0, 26, 36]
p "banana".all_indices(/ana/) #> [1, 3]


Harry

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