1match::smart(3)       User Contributed Perl Documentation      match::smart(3)
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NAME

6       match::smart - clone of smartmatch operator
7

SYNOPSIS

9          use v5.10;
10          use match::smart;
11
12          if ($this |M| $that)
13          {
14             say "$this matches $that";
15          }
16

DESCRIPTION

18       match::smart provides a match operator "|M|" that acts like more or
19       less identically to the (as of Perl 5.18) deprecated smart match
20       operator.
21
22       If you don't like the crazy Sub::Infix operator, you can alternatively
23       export a more normal function:
24
25          use v5.10;
26          use match::smart qw(match);
27
28          if (match($this, $that))
29          {
30             say "$this matches $that";
31          }
32
33   Differences with ~~
34       There were major changes to smart match between 5.10.0 and 5.10.1. This
35       module attempts to emulate the behaviour of the operator in more recent
36       versions of Perl. In particular, 5.18.0 (minus the warnings).
37       Divergences not noted below should be considered bugs.
38
39       While the real smart match operator implicitly takes references to
40       operands that are hashes or arrays, match::smart's operator does not.
41
42          @foo ~~ %bar       # means: \@foo ~~ \%bar
43          @foo |M| %bar      # means: scalar(@foo) |M| scalar(%bar)
44
45       If you want the "\@foo ~~ \%bar" behaviour, you need to add the
46       backslashes yourself:
47
48          \@foo |M| \%bar
49
50       Similarly:
51
52          "foo" ~~  /foo/    # works
53          "foo" |M| /foo/    # no worky!
54          "foo" |M| qr/foo/  # do this instead
55
56       match::smart treats the "MATCH" method on blessed objects (if it
57       exists) like an overloaded "~~". This is for compatibility with
58       match::simple, and for compatibility with pre-5.10 Perls that don't
59       allow overloading "~~".
60

BUGS

62       Please report any bugs to
63       <http://rt.cpan.org/Dist/Display.html?Queue=match-simple>.
64

SEE ALSO

66       match::simple.
67
68       This module uses Exporter::Tiny.
69

AUTHOR

71       Toby Inkster <tobyink@cpan.org>.
72

74       This software is copyright (c) 2013-2014, 2017 by Toby Inkster.
75
76       This is free software; you can redistribute it and/or modify it under
77       the same terms as the Perl 5 programming language system itself.
78

DISCLAIMER OF WARRANTIES

80       THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
81       WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
82       MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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86perl v5.30.1                      2020-01-30                   match::smart(3)
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