Replace multiple patterns of a string in single pass

ruby-talk
1

Dear Friends,
        How can I replace multiple patterns of a string in single pass.

by
Vellingiri

···

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Posted via http://www.ruby-forum.com/.

2

Try String#gsub

Jeff

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On Sep 19, 5:13 am, Vellingiri Arul <hariharan....@rediffmail.com> wrote:

Dear Friends,
        How can I replace multiple patterns of a string in single pass.

by
Vellingiri
--
Posted viahttp://www.ruby-forum.com/.

3

What you need to do is put multiple regular expressions into String#gsub
method by first calling Regexp::union. At each match you need to find out
which regular expression did the match and provide it with the replacement
string. So you need to use this version of gsub:
  str.gsub(pattern) {|match| block } => new_str

/D

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On 9/19/07, Jeff <cohen.jeff@gmail.com> wrote:

On Sep 19, 5:13 am, Vellingiri Arul <hariharan....@rediffmail.com> > wrote:
> Dear Friends,
> How can I replace multiple patterns of a string in single pass.
>
> by
> Vellingiri
> --
> Posted viahttp://www.ruby-forum.com/.

Try String#gsub

Jeff