From: "Wayne E. Seguin" <wayneeseguin@...>
Date: 2007-10-12T21:32:29+09:00
Subject: Re: How to delete specific characters from a string?

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On 10/12/07, Wayne E. Seguin <wayneeseguin@gmail.com> wrote:
>
> I love that observation, great point Giles! Truly enjoyable.
>


class String
  def delete_indices(*indices, &block)
    indices.each do |index|
      yield self[index] if block_given?
      self[index] = ''
    end
    self
  end
end

Delete elements in this order:

>> "Testing String".delete_indices(0,2,6,8)
=> "esing trng"

Delete elements in a specified order and do something with them:

>> "Testing String".delete_indices(0,2,6,8) {|value| p value.chr}
"T"
"t"
"S"
"i"
=> "esing trng"

Delete a range and do something with it:

>> "Testing String".delete_indices(0..4) {|value| p value}
"Testi"
=> "ng String"

Mix and match:

>> "Testing String".delete_indices(0,2..4,8) {|value| p value}
84
"tin"
110
=> "esg Strig"

  ~Wayne

P.S. Just for fun. Giles already answered the OPs question IMO so why not
play around with it? One of the things I love about Ruby is that you can
actually enjoy playing around with the language itself!

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