From: James Edward Gray II <james@...>
Date: 2007-10-12T21:33:20+09:00
Subject: Re: How to delete specific characters from a string?

On Oct 11, 2007, at 9:30 PM, Giles Bowkett wrote:

>>>> Is there really no method that allows me to delete N characters  
>>>> starting
>>>>   at position P from a string? I have looked (carefully I hope)  
>>>> through
>>>> the String methods and did not see a way to do this. Thanks.
>
> I think the OP was looking for a method on String itself, but the
> whole point of Ruby is that if the language doesn't have the features
> you want, you just add the features to the language.
>
> class String
>   def delete_n_from_p(n, p)
>     n.times do
>       self[p] = ''
>     end
>     self
>   end
> end
>
>>> "muppet".delete_n_from_p(2,3)
> => "mupt"
>
> That makes it easy to reuse the functionality.

 >> s = "muppet"
=> "muppet"
 >> s[3, 2] = ""
=> ""
 >> s
=> "mupt"
 >>

James Edward Gray II