Pattern Tester : Pattern matching « Regular Expression « Perl

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Perl » Regular Expression » Pattern matching

Pattern Tester


    



#!/usr/bin/perl

use warnings;

use strict;

$_ = q("'yes' or 'no',".);

print "Enter some text to find: ";

my $pattern = "test";

chomp($pattern);



if (/$pattern/) {

    print "The text matches the pattern '$pattern'.\n";

} else {

    print "'$pattern' was not found.\n";

}

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4.	Pattern array
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6.	Pattern-Matching Operators(The syntax used to perform a pattern match on a string)
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13.	Regular expression modifiers
14.	Regular expression pattern quantifiers
15.	Regular expression: start a string with period
16.	Reversing subpatterns
17.	Repeating patterns
18.	Check for 'a'
19.	Check for 4-8 a's
20.	Check for a or b
21.	Check for and remove a trailing backslash character
22.	Check for leading alpha character, rest alphanumeric
23.	Check for no 'a'
24.	Check for white space
25.	A program that illustrates the use of the matching operator.
26.	/d.f/ matches d, followed by any non-newline character, followed by f
27.	/de{1,3}f/ matches d, followed by one, two, or three occurrences of e, followed by f.
28.	Print line unless it matches E
29.	Count the match times

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