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Re: Pattern Matching - Remove Alpha

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John W. Krahn
January 16, 2002 20:42
Re: Pattern Matching - Remove Alpha
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Hewlett Pickens wrote:
> I am unable to use "split" with pattern matching to remove alpha characters
> from a string and will appreciate a pointer on what I'm doing wrong. (Have
> looked in "Learning Perl" and "Programming Perl" but can't spot my error.)
> 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/,$stat); # removes all data from the string
> From reading, my understanding of "split":  Discards all data that matches
> the pattern and returns a set of list values for the unmatched data. ("my
> understanding" may be the problem)
> This pattern works - removes all blanks (white space) but leaves alpha and
> numbers which of course isn't what I want
>    my @nums = split(/ +/,$stat);   # removes all blanks

my @nums = $stat =~ /\d+/g;

use Perl;

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