Check for no digit : Digit « Regular Expression « Perl

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Perl » Regular Expression » Digit

Check for no digit


    



#!/usr/bin/perl -w



foreach $patt (@ARGV) {



    # Check for no digit.

    if ($patt =~ /\D/) {

        print "\tFound non-digit in \"$patt\".\n";

    }

}

Related examples in the same category

1.	Determine if a string has a digit.
2.	Check for digit
3.	if ($text =~ /(\d+)/) {print "Here's the number of apples: $1.\n";}
4.	if ($text =~ /\D/) {print "It's not a number.";}
5.	if ($text =~ /^[+-]\d+\.\d*$/) {print "It's a number.";}
6.	if ($text =~ /^\d+$/) {print "It's a number.";}
7.	A simple integer-validation program.
8.	Get all numbers
9.	Match the one or more alphanumerics.
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12.	Match one or zero alphanumerics followed by a single space character

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