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Re: grep match variable position

by AnomalousMonk (Archbishop)
on May 16, 2016 at 14:53 UTC ( [id://1163139]=note: print w/replies, xml ) Need Help??


in reply to grep match variable position

Yet another, and more general, approach:

c:\@Work\Perl\monks>perl -wMstrict -le "my @stopwords= qw(a the of); my ($stopper) = map qr{ (?i) $_ }xms, join q{ | }, reverse sort map quotemeta, @stopwords ; print $stopper; ;; my $l_bound = qr{ \A }xms; my $r_bound = qr{ \z }xms; ;; for my $string ( 'of sky blue', 'all blue of', 'out of blue', @ARGV, ) { printf qq{'$string' }; if ($string =~ m{ $l_bound $stopper | $stopper $r_bound }xms) { print 'has stopper pattern'; } else { print 'has no stopper'; } } " of the a off and (?^msx: (?i) the | of | a ) 'of sky blue' has stopper pattern 'all blue of' has stopper pattern 'out of blue' has no stopper 'of' has stopper pattern 'the' has stopper pattern 'a' has stopper pattern 'off' has stopper pattern 'and' has stopper pattern
You may not need such generality.


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