App-Dex
view release on metacpan or search on metacpan
scripts/dex view on Meta::CPAN
use warnings;
use List::Util;
our $VERSION = "1.59"; # FIXUP
$VERSION =~ tr/_//d; # FIXUP
1;
__END__
=head1 NAME
List::Util::XS - Indicate if List::Util was compiled with a C compiler
=head1 SYNOPSIS
use List::Util::XS 1.20;
=head1 DESCRIPTION
C<List::Util::XS> can be used as a dependency to ensure List::Util was
installed using a C compiler and that the XS version is installed.
During installation C<$List::Util::XS::VERSION> will be set to
C<undef> if the XS was not compiled.
Starting with release 1.23_03, Scalar-List-Util is B<always> using
the XS implementation, but for backwards compatibility, we still
ship the C<List::Util::XS> module which just loads C<List::Util>.
=head1 SEE ALSO
L<Scalar::Util>, L<List::Util>, L<List::MoreUtils>
=head1 COPYRIGHT
Copyright (c) 2008 Graham Barr <gbarr@pobox.com>. All rights reserved.
This program is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.
=cut
X86_64-LINUX-GNU-THREAD-MULTI_LIST_UTIL_XS
$fatpacked{"x86_64-linux-gnu-thread-multi/Scalar/Util.pm"} = '#line '.(1+__LINE__).' "'.__FILE__."\"\n".<<'X86_64-LINUX-GNU-THREAD-MULTI_SCALAR_UTIL';
# Copyright (c) 1997-2007 Graham Barr <gbarr@pobox.com>. All rights reserved.
# This program is free software; you can redistribute it and/or
# modify it under the same terms as Perl itself.
#
# Maintained since 2013 by Paul Evans <leonerd@leonerd.org.uk>
package Scalar::Util;
use strict;
use warnings;
require Exporter;
our @ISA = qw(Exporter);
our @EXPORT_OK = qw(
blessed refaddr reftype weaken unweaken isweak
dualvar isdual isvstring looks_like_number openhandle readonly set_prototype
tainted
);
our $VERSION = "1.59";
$VERSION =~ tr/_//d;
require List::Util; # List::Util loads the XS
List::Util->VERSION( $VERSION ); # Ensure we got the right XS version (RT#100863)
# populating @EXPORT_FAIL is done in the XS code
sub export_fail {
if (grep { /^isvstring$/ } @_ ) {
require Carp;
Carp::croak("Vstrings are not implemented in this version of perl");
}
@_;
}
# set_prototype has been moved to Sub::Util with a different interface
sub set_prototype(&$)
{
my ( $code, $proto ) = @_;
return Sub::Util::set_prototype( $proto, $code );
}
1;
__END__
=head1 NAME
Scalar::Util - A selection of general-utility scalar subroutines
=head1 SYNOPSIS
use Scalar::Util qw(blessed dualvar isdual readonly refaddr reftype
tainted weaken isweak isvstring looks_like_number
set_prototype);
# and other useful utils appearing below
=head1 DESCRIPTION
C<Scalar::Util> contains a selection of subroutines that people have expressed
would be nice to have in the perl core, but the usage would not really be high
enough to warrant the use of a keyword, and the size would be so small that
being individual extensions would be wasteful.
By default C<Scalar::Util> does not export any subroutines.
=cut
=head1 FUNCTIONS FOR REFERENCES
The following functions all perform some useful activity on reference values.
=head2 blessed
my $pkg = blessed( $ref );
If C<$ref> is a blessed reference, the name of the package that it is blessed
into is returned. Otherwise C<undef> is returned.
$scalar = "foo";
$class = blessed $scalar; # undef
$ref = [];
$class = blessed $ref; # undef
$obj = bless [], "Foo";
$class = blessed $obj; # "Foo"
Take care when using this function simply as a truth test (such as in
C<if(blessed $ref)...>) because the package name C<"0"> is defined yet false.
=head2 refaddr
my $addr = refaddr( $ref );
If C<$ref> is reference, the internal memory address of the referenced value is
returned as a plain integer. Otherwise C<undef> is returned.
$addr = refaddr "string"; # undef
$addr = refaddr \$var; # eg 12345678
$addr = refaddr []; # eg 23456784
$obj = bless {}, "Foo";
$addr = refaddr $obj; # eg 88123488
=head2 reftype
my $type = reftype( $ref );
If C<$ref> is a reference, the basic Perl type of the variable referenced is
returned as a plain string (such as C<ARRAY> or C<HASH>). Otherwise C<undef>
is returned.
$type = reftype "string"; # undef
scripts/dex view on Meta::CPAN
ways:
$! = 1;
$dual = isdual($!); # true
print("$!\n"); # "Operation not permitted"
B<CAUTION>: This function is not as useful as it may seem. Dualvars are not a
distinct concept in Perl, but a standard internal construct of all scalar
values. Almost any value could be considered as a dualvar by this function
through the course of normal operations.
=head2 isvstring
my $vstring = isvstring( $var );
If C<$var> is a scalar which was coded as a vstring, the result is true.
$vs = v49.46.48;
$fmt = isvstring($vs) ? "%vd" : "%s"; #true
printf($fmt,$vs);
=head2 looks_like_number
my $isnum = looks_like_number( $var );
Returns true if perl thinks C<$var> is a number. See
L<perlapi/looks_like_number>.
=head2 openhandle
my $fh = openhandle( $fh );
Returns C<$fh> itself, if C<$fh> may be used as a filehandle and is open, or if
it is a tied handle. Otherwise C<undef> is returned.
$fh = openhandle(*STDIN); # \*STDIN
$fh = openhandle(\*STDIN); # \*STDIN
$fh = openhandle(*NOTOPEN); # undef
$fh = openhandle("scalar"); # undef
=head2 readonly
my $ro = readonly( $var );
Returns true if C<$var> is readonly.
sub foo { readonly($_[0]) }
$readonly = foo($bar); # false
$readonly = foo(0); # true
=head2 set_prototype
my $code = set_prototype( $code, $prototype );
Sets the prototype of the function given by the C<$code> reference, or deletes
it if C<$prototype> is C<undef>. Returns the C<$code> reference itself.
set_prototype \&foo, '$$';
=head2 tainted
my $t = tainted( $var );
Return true if C<$var> is tainted.
$taint = tainted("constant"); # false
$taint = tainted($ENV{PWD}); # true if running under -T
=head1 DIAGNOSTICS
Module use may give one of the following errors during import.
=over
=item Vstrings are not implemented in this version of perl
The version of perl that you are using does not implement Vstrings, to use
L</isvstring> you will need to use a newer release of perl.
=back
=head1 KNOWN BUGS
There is a bug in perl5.6.0 with UV's that are >= 1<<31. This will
show up as tests 8 and 9 of dualvar.t failing
=head1 SEE ALSO
L<List::Util>
=head1 COPYRIGHT
Copyright (c) 1997-2007 Graham Barr <gbarr@pobox.com>. All rights reserved.
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
Additionally L</weaken> and L</isweak> which are
Copyright (c) 1999 Tuomas J. Lukka <lukka@iki.fi>. All rights reserved.
This program is free software; you can redistribute it and/or modify it
under the same terms as perl itself.
Copyright (C) 2004, 2008 Matthijs van Duin. All rights reserved.
Copyright (C) 2014 cPanel Inc. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
=cut
X86_64-LINUX-GNU-THREAD-MULTI_SCALAR_UTIL
$fatpacked{"x86_64-linux-gnu-thread-multi/Sub/Util.pm"} = '#line '.(1+__LINE__).' "'.__FILE__."\"\n".<<'X86_64-LINUX-GNU-THREAD-MULTI_SUB_UTIL';
# Copyright (c) 2014 Paul Evans <leonerd@leonerd.org.uk>. All rights reserved.
# This program is free software; you can redistribute it and/or
# modify it under the same terms as Perl itself.
package Sub::Util;
use strict;
use warnings;
require Exporter;
our @ISA = qw( Exporter );
our @EXPORT_OK = qw(
prototype set_prototype
subname set_subname
);
( run in 0.459 second using v1.01-cache-2.11-cpan-2398b32b56e )