Robert Krimen > Util-Utl-0.0011 > Util::Utl

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Module Version: 0.0011   Source  

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.

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