<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">NAME
    Syntax::Keyword::Junction - Perl6 style Junction operators in Perl5

VERSION
    version 0.003000

SYNOPSIS
      use Syntax::Keyword::Junction qw/ all any none one /;

      if (any(@grant) eq 'su') {
        ...
      }

      if (all($foo, $bar) &gt;= 10) {
        ...
      }

      if (qr/^\d+$/ == all(@answers)) {
        ...
      }

      if (all(@input) &lt;= @limits) {
        ...
      }

      if (none(@pass) eq 'password') {
        ...
      }

      if (one(@answer) == 42) {
        ...
      }

    or if you want to rename an export, use Sub::Exporter options:

      use Syntax::Keyword::Junction any =&gt; { -as =&gt; 'robot_any' };

      if (robot_any(@grant) eq 'su') {
        ...
      }

DESCRIPTION
    This is a lightweight module which provides 'Junction' operators, the
    most commonly used being "any" and "all".

    Inspired by the Perl6 design docs,
    &lt;http://dev.perl.org/perl6/doc/design/exe/E06.html&gt;.

    Provides a limited subset of the functionality of
    Quantum::Superpositions, see "SEE ALSO" for comment.

    Notice in the "SYNOPSIS" above, that if you want to match against a
    regular expression, you must use "==" or "!=". Not "=~" or "!~". You
    must also use a regex object, such as "qr/\d/", not a plain regex such
    as "/\d/".

SUBROUTINES
  all()
    Returns an object which overloads the following operators:

      '&lt;',  '&lt;=', '&gt;',  '&gt;=', '==', '!=',
      'lt', 'le', 'gt', 'ge', 'eq', 'ne',
      '~~'

    Returns true only if all arguments test true according to the operator
    used.

  any()
    Returns an object which overloads the following operators:

      '&lt;',  '&lt;=', '&gt;',  '&gt;=', '==', '!=',
      'lt', 'le', 'gt', 'ge', 'eq', 'ne',
      '~~'

    Returns true if any argument tests true according to the operator used.

  none()
    Returns an object which overloads the following operators:

      '&lt;',  '&lt;=', '&gt;',  '&gt;=', '==', '!=',
      'lt', 'le', 'gt', 'ge', 'eq', 'ne',
      '~~'

    Returns true only if no argument tests true according to the operator
    used.

  one()
    Returns an object which overloads the following operators:

      '&lt;',  '&lt;=', '&gt;',  '&gt;=', '==', '!=',
      'lt', 'le', 'gt', 'ge', 'eq', 'ne',
      '~~'

    Returns true only if one and only one argument tests true according to
    the operator used.

ALTERING JUNCTIONS
    You cannot alter junctions. Instead, you can create new junctions out of
    old junctions. You can do this by calling the "values" method on a
    junction.

     my $numbers = any(qw/1 2 3 4 5/);
     print $numbers == 3 ? 'Yes' : 'No';   # Yes

     $numbers = any( grep { $_ != 3 } $numbers-&gt;values );
     print $numbers == 3 ? 'Yes' : 'No';   # No

    You can also use the "map" method:

     my $numbers = any(qw/1 2 3 4 5/);
     my $prime   = $numbers-&gt;map( \&amp;is_prime );

     say for $prime-&gt;values; # prints 0, 1, 1, 0, 1

EXPORT
    'all', 'any', 'none', 'one', as requested.

    All subroutines can be called by its fully qualified name, if you don't
    want to export them.

      use Syntax::Keyword::Junction;

      if (Syntax::Keyword::Junction::any( @questions )) {
        ...
      }

WARNING
    When comparing against a regular expression, you must remember to use a
    regular expression object: "qr/\d/" Not "/d/". You must also use either
    "==" or "!=". This is because "=~" and "!~" cannot be overriden.

TO DO
    Add overloading for arithmetic operators, such that this works:

      $result = any(2,3,4) * 2;

      if ($result == 8) {...}

SEE ALSO
    This module is actually a fork of Perl6::Junction with very few
    (initial) changes. The reason being that we want to avoid the incendiary
    name containing Perl6.

    Quantum::Superpositions provides the same functionality as this, and
    more. However, this module provides this limited functionality at a much
    greater runtime speed, with my benchmarks showing between 500% and 6000%
    improvment.

    &lt;http://dev.perl.org/perl6/doc/design/exe/E06.html&gt; - "The Wonderful
    World of Junctions".

AUTHORS
    *   Arthur Axel "fREW" Schmidt &lt;frioux+cpan@gmail.com&gt;

    *   Carl Franks

COPYRIGHT AND LICENSE
    This software is copyright (c) 2012 by Arthur Axel "fREW" Schmidt.

    This is free software; you can redistribute it and/or modify it under
    the same terms as the Perl 5 programming language system itself.

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