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.IX Title "List::Objects::WithUtils::Role::Array::WithJunctions 3pm"
.TH List::Objects::WithUtils::Role::Array::WithJunctions 3pm "2019-01-18" "perl v5.28.1" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.SH "NAME"
List::Objects::WithUtils::Role::Array::WithJunctions \- Add junctions
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 2
\&  ## Via List::Objects::WithUtils::Array \->
\&  use List::Objects::WithUtils \*(Aqarray\*(Aq;
\&
\&  my $array = array(qw/ a b c /);
\&
\&  if ( $array\->any_items eq \*(Aqb\*(Aq ) {
\&    ...
\&  }
\&
\&  if ( $array\->all_items eq \*(Aqa\*(Aq ) {
\&    ...
\&  }
\&
\&  if ( $array\->any_items == qr/^b/ ) {
\&    ...
\&  }
\&
\&  ## As a Role \->
\&  use Role::Tiny::With;
\&  with \*(AqList::Objects::WithUtils::Role::Array\*(Aq,
\&       \*(AqList::Objects::WithUtils::Role::Array::WithJunctions\*(Aq;
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
These methods supply overloaded List::Objects::WithUtils::Array::Junction
objects that can be compared with values using normal Perl comparison
operators.
.PP
Regular expressions can be matched by providing a \f(CW\*(C`qr//\*(C'\fR regular expression
object to the \f(CW\*(C`==\*(C'\fR or \f(CW\*(C`!=\*(C'\fR operators.
.PP
There is no support for the \f(CW\*(C`~~\*(C'\fR experimental smart-match operator.
.PP
The junction objects returned are subclasses of
List::Objects::WithUtils::Array, allowing manipulation of junctions (of
varying degrees of sanity) \*(-- a simple case might be generating a new junction
out of an old junction:
.PP
.Vb 9
\&  my $list = array(3, 4, 5);
\&  if ( (my $anyof = $list\->any_items) > 2 ) {
\&    my $incr = $anyof\->map(sub { $_[0] + 1 })\->all_items;
\&    if ( $incr > 6 ) {
\&      # ...
\&    }
\&    # Drop junction magic again:
\&    my $plain = array( $incr\->all );
\&  }
.Ve
.SS "any_items"
.IX Subsection "any_items"
Returns the overloaded \fBany\fR object for the current array; a comparison is
true if any items in the array satisfy the condition.
.SS "all_items"
.IX Subsection "all_items"
Returns the overloaded \fBall\fR object for the current array; a comparison is
true only if all items in the array satisfy the condition.
.SH "AUTHOR"
.IX Header "AUTHOR"
Jon Portnoy <avenj@cobaltirc.org>