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package List::Objects::WithUtils::Role::Array::WithJunctions; |
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use strictures 1; |
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use List::Objects::WithUtils::Array::Junction (); |
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use Role::Tiny; |
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sub any_items { |
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List::Objects::WithUtils::Array::Junction::Any->new( @{ $_[0] } ) |
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} |
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sub all_items { |
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List::Objects::WithUtils::Array::Junction::All->new( @{ $_[0] } ) |
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} |
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1; |
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=pod |
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=head1 NAME |
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List::Objects::WithUtils::Role::Array::WithJunctions - Add junctions |
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=head1 SYNOPSIS |
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## Via List::Objects::WithUtils::Array -> |
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use List::Objects::WithUtils 'array'; |
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my $array = array(qw/ a b c /); |
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if ( $array->any_items eq 'b' ) { |
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... |
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} |
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if ( $array->all_items eq 'a' ) { |
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... |
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} |
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if ( $array->any_items == qr/^b/ ) { |
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... |
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} |
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## As a Role -> |
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use Role::Tiny::With; |
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with 'List::Objects::WithUtils::Role::Array', |
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'List::Objects::WithUtils::Role::Array::WithJunctions'; |
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=head1 DESCRIPTION |
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These methods supply overloaded L<List::Objects::WithUtils::Array::Junction> |
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objects that can be compared with values using normal Perl comparison |
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operators. |
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Regular expressions can be matched by providing a C<qr//> regular expression |
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object to the C<==> or C<!=> operators. |
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There is no support for the C<~~> experimental smart-match operator. |
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The junction objects returned are subclasses of |
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L<List::Objects::WithUtils::Array>, allowing manipulation of junctions (of |
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varying degrees of sanity) -- a simple case might be generating a new junction |
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out of an old junction: |
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my $list = array(3, 4, 5); |
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if ( (my $anyof = $list->any_items) > 2 ) { |
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my $incr = $anyof->map(sub { $_[0] + 1 })->all_items; |
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if ( $incr > 3 ) { |
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... |
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} |
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# Drop junction magic again: |
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my $plain = array( $incr->all ); |
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} |
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=head2 any_items |
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Returns the overloaded B<any> object for the current array; a comparison is |
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true if any items in the array satisfy the condition. |
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=head2 all_items |
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Returns the overloaded B<all> object for the current array; a comparison is |
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true only if all items in the array satisfy the condition. |
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=head1 AUTHOR |
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Jon Portnoy <avenj@cobaltirc.org> |
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=cut |
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