Hi --
On Fri, 11 Sep 2009, Sandip Ransing wrote:
> Hello All,
>
> I wanted regular expression for the following patterns like
>
> Nauzer Bharucha, TNN 10 September 2009, 12:01am IST
>
> IANS 3 September 2009, 02:57pm IST
>
> regular expression should return
> date in first group
> author in second group
> and agency in third group
>
> for below pattern it should return
> Nauzer Bharucha, TNN 10 September 2009, 12:01am IST
>
> $1 = 10 September 2009
> $2 = Nauzer Bharucha
> $3 = TNN
>
> In second case author is nil
>
> Any ideas ?
I'm in a "teaching to fish" mood :-)
If you're not yet thinking in regex terms, you need to dissect and
describe your pattern, and then translate it into a regular
expression. Here's a description, as I understand it.
zero or one of
(one or more non-comma characters)
a comma
one or more spaces
(three uppercase letters)
one or more spaces
(one or more non-comma characters)
etc.
Also, note that you can't choose which capture will be $1, $2, etc.
They are assigned strictly in the order in which the left parentheses
appear, left to right (unless you use (?:) to suppress inclusion of a
particular group).
David
--
David A. Black / Ruby Power and Light, LLC / http://www.rubypal.com
Ruby/Rails training, mentoring, consulting, code-review
Latest book: The Well-Grounded Rubyist (http://www.manning.com/black2)
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