/snap/gh/640/usr/share/perl/5.38.2
Edit: /snap/gh/640/usr/share/perl/5.38.2/Symbol.pm (4905B)
package Symbol;
use strict;
use warnings;
=head1 NAME
Symbol - manipulate Perl symbols and their names
=head1 SYNOPSIS
use Symbol;
$sym = gensym;
open($sym, '<', "filename");
$_ = <$sym>;
# etc.
ungensym $sym; # no effect
# replace *FOO{IO} handle but not $FOO, %FOO, etc.
*FOO = geniosym;
print qualify("x"), "\n"; # "main::x"
print qualify("x", "FOO"), "\n"; # "FOO::x"
print qualify("BAR::x"), "\n"; # "BAR::x"
print qualify("BAR::x", "FOO"), "\n"; # "BAR::x"
print qualify("STDOUT", "FOO"), "\n"; # "main::STDOUT" (global)
print qualify(\*x), "\n"; # returns \*x
print qualify(\*x, "FOO"), "\n"; # returns \*x
use strict refs;
print { qualify_to_ref $fh } "foo!\n";
$ref = qualify_to_ref $name, $pkg;
use Symbol qw(delete_package);
delete_package('Foo::Bar');
print "deleted\n" unless exists $Foo::{'Bar::'};
=head1 DESCRIPTION
C
creates an anonymous glob and returns a reference
to it. Such a glob reference can be used as a file or directory
handle.
For backward compatibility with older implementations that didn't
support anonymous globs, C is also provided.
But it doesn't do anything.
C creates an anonymous IO handle. This can be
assigned into an existing glob without affecting the non-IO portions
of the glob.
C turns unqualified symbol names into qualified
variable names (e.g. "myvar" -E "MyPackage::myvar"). If it is given a
second parameter, C uses it as the default package;
otherwise, it uses the package of its caller. Regardless, global
variable names (e.g. "STDOUT", "ENV", "SIG") are always qualified with
"main::".
Qualification applies only to symbol names (strings). References are
left unchanged under the assumption that they are glob references,
which are qualified by their nature.
C is just like C except that it
returns a glob ref rather than a symbol name, so you can use the result
even if C