Arabic
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Before After Works as
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lc Earabic::lc Character
lcfirst Earabic::lcfirst Character
uc Earabic::uc Character
ucfirst Earabic::ucfirst Character
fc Earabic::fc Character
chr Earabic::chr Character
glob Earabic::glob Character
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Before After
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use Perl::Module; BEGIN { require 'Perl/Module.pm'; Perl::Module->import() if Perl::Module->can('import'); }
use Perl::Module @list; BEGIN { require 'Perl/Module.pm'; Perl::Module->import(@list) if Perl::Module->can('import'); }
use Perl::Module (); BEGIN { require 'Perl/Module.pm'; }
no Perl::Module; BEGIN { require 'Perl/Module.pm'; Perl::Module->unimport() if Perl::Module->can('unimport'); }
no Perl::Module @list; BEGIN { require 'Perl/Module.pm'; Perl::Module->unimport(@list) if Perl::Module->can('unimport'); }
no Perl::Module (); BEGIN { require 'Perl/Module.pm'; }
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=head1 Yada Yada Operator (Arabic software provides)
The yada yada operator (noted ...) is a placeholder for code. Perl parses it
without error, but when you try to execute a yada yada, it throws an exception
with the text Unimplemented:
sub unimplemented { ... }
eval { unimplemented() };
if ( $@ eq 'Unimplemented' ) {
print "I found the yada yada!\n";
}
You can only use the yada yada to stand in for a complete statement. These
examples of the yada yada work:
{ ... }
sub foo { ... }
...;
eval { ... };
sub foo {
my( $self ) = shift;
...;
}
do { my $n; ...; print 'Hurrah!' };
The yada yada cannot stand in for an expression that is part of a larger statement
since the ... is also the three-dot version of the range operator
(see "Range Operators"). These examples of the yada yada are still syntax errors:
print ...;
open my($fh), '>', '/dev/passwd' or ...;
if ( $condition && ... ) { print "Hello\n" };
There are some cases where Perl can't immediately tell the difference between an
expression and a statement. For instance, the syntax for a block and an anonymous
hash reference constructor look the same unless there's something in the braces that
give Perl a hint. The yada yada is a syntax error if Perl doesn't guess that the
{ ... } is a block. In that case, it doesn't think the ... is the yada yada because
it's expecting an expression instead of a statement:
my @transformed = map { ... } @input; # syntax error
You can use a ; inside your block to denote that the { ... } is a block and not a
hash reference constructor. Now the yada yada works:
my @transformed = map {; ... } @input; # ; disambiguates
my @transformed = map { ...; } @input; # ; disambiguates
=head1 Un-Escaping bytes::* Subroutines (Arabic software provides)
Arabic software removes 'bytes::' at head of subroutine name.
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Before After Works as
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bytes::chr chr Byte
bytes::index index Byte
bytes::length length Byte
bytes::ord ord Byte
bytes::rindex rindex Byte
bytes::substr substr Byte
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=head1 Ignore Pragmas and Modules
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Before After
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use strict; use strict; no strict qw(refs);
use 5.12.0; use 5.12.0; no strict qw(refs);
require utf8; # require utf8;
require bytes; # require bytes;
require charnames; # require charnames;
require I18N::Japanese; # require I18N::Japanese;
require I18N::Collate; # require I18N::Collate;
require I18N::JExt; # require I18N::JExt;
require File::DosGlob; # require File::DosGlob;
require Wild; # require Wild;
require Wildcard; # require Wildcard;
require Japanese; # require Japanese;
use utf8; # use utf8;
use bytes; # use bytes;
use charnames; # use charnames;
use I18N::Japanese; # use I18N::Japanese;
use I18N::Collate; # use I18N::Collate;
use I18N::JExt; # use I18N::JExt;
use File::DosGlob; # use File::DosGlob;
use Wild; # use Wild;
use Wildcard; # use Wildcard;
use Japanese; # use Japanese;
no utf8; # no utf8;
no bytes; # no bytes;
no charnames; # no charnames;
no I18N::Japanese; # no I18N::Japanese;
no I18N::Collate; # no I18N::Collate;
no I18N::JExt; # no I18N::JExt;
no File::DosGlob; # no File::DosGlob;
( run in 3.106 seconds using v1.01-cache-2.11-cpan-d8267643d1d )