NAME

Acrux::RefUtil - Pure Perl Utility functions for checking references and data

SYNOPSIS

            

              
              
use Acrux::RefUtil qw/ :all /;
            
          

DESCRIPTION

Pure Perl Utility functions for checking references and data

AS

The 'as' functions are introduced by the :as import tag, which check the type of passed argument and returns it as required type

as_array_ref

This method returns the argument as a array reference

            

              
              
my $arr = as_array_ref( "foo" ); # ['foo']
my $arr = as_array_ref( "foo", "bar" ); # ['foo', 'bar']
my $arr = as_array_ref( ["foo", "bar"] ); # ['foo', 'bar']
my $arr = as_array_ref(); # []
my $arr = as_array_ref(undef); # []
my $arr = as_array_ref([undef]); # [undef]
            
          

as_array, as_list

This method returns argument as array-reference (see "as_array_ref") or regular array (list) in list context

            

              
              
my $arr = as_array( "foo", "bar" ); # ['foo', 'bar']
my @arr = as_array( "foo", "bar" ); # ('foo', 'bar')
            
          

as_first, as_first_val

This method returns the first scalar value from argument(s)

            

              
              
my $foo = as_first( [qw/foo bar baz/] );
my $foo = as_first( qw/foo bar baz/ );
            
          

as_hash_ref

This method returns the argument as a hash reference

            

              
              
my $hash = as_hash_ref( {foo => 'one'} ); {foo => 'one'}
my $hash = as_hash_ref( foo => 'one', bar => 2 );
    # {foo => 'one', bar => 2 }
my $hash = as_hash_ref(); # {}
my $hash = as_hash_ref(undef); # {}
            
          

as_hash

This method returns argument as hash-reference (see "as_hash_ref") or regular hash in list context

            

              
              
my $hash = as_hash( "foo", "bar" ); # {'foo' => 'bar'}
my %hash = as_hash( "foo", "bar" ); # ('foo', 'bar')
            
          

as_last, as_last_val, as_latest

This method returns the last scalar value from argument(s)

            

              
              
my $baz = as_last( [qw/foo bar baz/] );
my $baz = as_last( qw/foo bar baz/ );
            
          

CHECK

Check functions are introduced by the :check import tag, which check the argument type and return a bool

is_ref

Checks for a any reference

is_scalar_ref

Checks for a SCALAR reference

is_array_ref

Checks for an ARRAY reference

is_hash_ref

Checks for a HASH reference

is_code_ref

Checks for a CODE reference

is_glob_ref

Checks for a GLOB reference

is_regexp_ref, is_regex_ref, is_rx

Checks for a regular expression reference generated by the qr// operator

is_value

Checks whether value is a primitive value, i.e. a defined, non-ref, and non-type-glob value

is_string

Checks whether value is a string with non-zero-length contents, equivalent to is_value($value) && length($value) > 0

is_number

Checks whether value is a number

is_integer, is_int8, is_int16, is_int32, is_int64

Checks whether value is an integer

is_undef

Checks for a undef value

VOID

Void functions are introduced by the :void import tag, which check the argument type in void value and return a bool

is_void

            

              
              
print "Void" if is_void({});
            
          

Returns true if the structure contains useful data. Useful data - this data is different from the value undef

isnt_void

            

              
              
print "NOT Void" if isnt_void({foo=>undef});
            
          

Returns true if the structure does not contain any nested useful data. Useful data - this data is different from the value undef

FLAG

is_false_flag

            

              
              
print "Disabled" if is_false_flag("off");
            
          

If specified argument value is set to false then will be normalised to 1.

The following values will be considered as false:

            

              
              
no, off, 0, false, disable
            
          

This effect is case-insensitive, i.e. both "No" or "no" will result in 1.

is_true_flag

            

              
              
print "Enabled" if is_true_flag("on");
            
          

If specified argument value is set to true then will be normalised to 1.

The following values will be considered as true:

            

              
              
yes, on, 1, true, enable
            
          

This effect is case-insensitive, i.e. both "Yes" or "yes" will result in 1.

HISTORY

See Changes file

TO DO

See TODO file

SEE ALSO

Data::Util::PurePerl, Params::Classify, Ref::Util, CTK::TFVals, CTK::ConfGenUtil

AUTHOR

Serż Minus (Sergey Lepenkov) https://www.serzik.com <abalama@cpan.org>

COPYRIGHT

Copyright (C) 1998-2024 D&D Corporation. All Rights Reserved

LICENSE

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

See LICENSE file and https://dev.perl.org/licenses/