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Re: Pattern Matching - Remove Alpha

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Michael Fowler
January 16, 2002 18:42
Re: Pattern Matching - Remove Alpha
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On Wed, Jan 16, 2002 at 05:38:56PM -0600, Hewlett Pickens wrote:
> The detail:
>  "$stat" is a string that has alpha and numeric data in it.
>  I want to remove all of the alpha and put the numeric data into an array.
>  The first attempt:
>    my @nums = split(/a-zA-Z/,$stat); # removes all data from the string
>  The second attempt:
>    my @nums = split(/a-z/,$stat); # removes all data from the string

You've somehow got tr/// and regexes confused, or perhaps tr/// and split,
or perhaps you're just making stuff up.  ;)

Regardless, split(/a-zA-Z/, $stat) splits the string $stat on the string
"a-zA-Z".  Say, for example, $stat = "foo bar a-zA-Z baz qux".  Your split
would result in the list ("foo bar ", " baz qux").  You were probably aiming
for the regex /[a-zA-Z]/, or better yet, \w, as in, split(/\w/, $stat), or
perhaps split(/\w+/, $stat).

Please read perldoc perlre and the regex sections of your books.

Programmer, System Administrator

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