/ 
Util-Utl-0.0011
River stage zero No dependents
/ Util::Utl

NAME

Util::Utl - Scalar::Util, List::Util, List::MoreUtils, String::Util & more (via one subroutine)

VERSION

version 0.0011

SYNOPSIS

use Util::Utl;

utl->first( { ... }, ... )

if ( utl->blessed( ... ) ) {
}

if ( utl->looks_like_number( ... ) ) {
}

DESCRIPTION

Util::Utl exports a single subroutine utl which provides access to:

Scalar::Util

List::Util

List::MoreUtils

String::Util

USAGE

Util::Utl also provides some additional functionality

Each function here is accessed in the same way:

utl->$name( ... )

empty( $value )

Returns true if $value is undefined or has 0-length

blank( $value )

Returns true if $value is undefined or is composed only of whitespace (\s)

first( $code, ... )

List::Util::first

first( $hash, @query, $options )

%hash = ( a => 1, b => 2, c => 3 )
... = utl->first( \%hash, qw/ z a b / ) # Returns 1

For each name in @query, test $hash to see if it exists. Returns the value of the first entry found

Returns undef if none exist

$options (a HASH reference) are:

exclusive       True to throw an exception if more than 1 of query is present
                in $hash

                    %hash = ( a => 1, b => 2, c => 3 )

                    ... = utl->first( \%hash, qw/ a b /, { exclusive => 1 } )
                    # Throws an exception (die)

                    ... = utl->first( \%hash, qw/ a z /, { exclusive => 1 } )
                    # Does not throw an exception 

test            A subroutine for testing whether a value should be included or not. Can be
                used to skip over undefined or empty values

                    %hash = ( a => undef, b => '', c => 1 )

                    ... = utl->first( \%hash, qw/ a b c /, { test => sub { defined } } )
                    # Returns ''

empty           True to return an empty list instead of undef if none are found

                    %hash = ( a => 1 )
                    
                    ... = utl->first( \%hash, qw/ z x y / )
                    # Returns undef

                    ... = utl->first( \%hash, qw/ z x y /, { empty => 1 } )
                    # Returns ()

AUTHOR

Robert Krimen <robertkrimen@gmail.com>

COPYRIGHT AND LICENSE

This software is copyright (c) 2011 by Robert Krimen.

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