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Top Forums Shell Programming and Scripting Perl - Use of *? in Matching Pattern Post 302945322 by drl on Thursday 28th of May 2015 10:15:16 AM
Old 05-28-2015
Hi.
Code:
       By default, a quantified subpattern is "greedy", that is, it will match
       as many times as possible (given a particular starting location) while
       still allowing the rest of the pattern to match.  If you want it to
       match the minimum number of times possible, follow the quantifier with
       a "?".  Note that the meanings don't change, just the "greediness":

           *?     Match 0 or more times, not greedily
           +?     Match 1 or more times, not greedily
           ??     Match 0 or 1 time, not greedily
           {n}?   Match exactly n times, not greedily
           {n,}?  Match at least n times, not greedily
           {n,m}? Match at least n but not more than m times, not greedily

-- from perlre: perldoc perlre, or man perlre q.v.

Best wishes ... cheers, drl
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Mojolicious::Routes::Match(3pm) 			User Contributed Perl Documentation			   Mojolicious::Routes::Match(3pm)

NAME
Mojolicious::Routes::Match - Routes visitor SYNOPSIS
use Mojolicious::Routes; use Mojolicious::Routes::Match; # Routes my $r = Mojolicious::Routes->new; $r->get('/foo')->to(action => 'foo'); $r->put('/bar')->to(action => 'bar'); # Match my $m = Mojolicious::Routes::Match->new(PUT => '/bar'); $m->match($r); say $m->captures->{action}; DESCRIPTION
Mojolicious::Routes::Match is a visitor for Mojolicious::Routes structures. ATTRIBUTES
Mojolicious::Routes::Match implements the following attributes. "captures" my $captures = $m->captures; $m = $m->captures({foo => 'bar'}); Captured parameters. "endpoint" my $endpoint = $m->endpoint; $m = $m->endpoint(Mojolicious::Routes->new); The routes endpoint that actually matched. "root" my $root = $m->root; $m = $m->root($routes); The root of the routes tree. "stack" my $stack = $m->stack; $m = $m->stack([{foo => 'bar'}]); Captured parameters with nesting history. METHODS
Mojolicious::Routes::Match inherits all methods from Mojo::Base and implements the following ones. "new" my $m = Mojolicious::Routes::Match->new(GET => '/foo'); my $m = Mojolicious::Routes::Match->new(GET => '/foo', $ws); Construct a new match object. "match" $m->match(Mojolicious::Routes->new, Mojolicious::Controller->new); Match against a routes tree. "path_for" my $path = $m->path_for; my $path = $m->path_for(foo => 'bar'); my $path = $m->path_for({foo => 'bar'}); my $path = $m->path_for('named'); my $path = $m->path_for('named', foo => 'bar'); my $path = $m->path_for('named', {foo => 'bar'}); my ($path, $ws) = $m->path_for; my ($path, $ws) = $m->path_for(foo => 'bar'); my ($path, $ws) = $m->path_for({foo => 'bar'}); my ($path, $ws) = $m->path_for('named'); my ($path, $ws) = $m->path_for('named', foo => 'bar'); my ($path, $ws) = $m->path_for('named', {foo => 'bar'}); Render matching route with parameters into path. SEE ALSO
Mojolicious, Mojolicious::Guides, <http://mojolicio.us>. perl v5.14.2 2012-09-05 Mojolicious::Routes::Match(3pm)
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