NAME
Syntax::Construct - Identify which non-feature constructs are used in the code.
VERSION
Version 0.14
SYNOPSIS
For some new syntactic constructs, there is the feature pragma. For the rest, there is Syntax::Construct.
use Syntax::Construct qw( // ... /r );
my $x = shift // 'default';
my $y = $x =~ s/de(fault)/$1/r;
if ($y =~ /^fault/) {
...
}DESCRIPTION
This module provides a simple way of specifying syntactic constructs that are not implemented via the feature pragma, but are still not compatible with older versions of Perl.
EXPORT
Nothing. Using Syntax::Construct with no parameters is an error, giving it an empty list is a no-op.
RECOGNISED CONSTRUCTS
5.010
recursive-sort
"Recursive sort subs" in perl5100delta.
//
"Defined-or operator" in perl5100delta or "Logical Defined-Or" in perlop.
?PARNO
"Recursive Patterns" under "Regular expressions" in perl5100delta or "(?PARNO) (?-PARNO) (?+PARNO) (?R) (?0)" in perlre.
?<>
"Named Capture Buffers" under "Regular expressions" in perl5100delta or "(?<NAME>pattern)" in perlre.
?|
Not mentioned in any Delta. See (?|pattern) in "Extended patterns" in perlre.
quant+
"Possessive Quantifiers" under "Regular expressions" in perl5100delta or "Quantifiers" in perlre.
regex-verbs
"Backtracking control verbs" under "Regular expressions" in perl5100delta or "Special Backtracking Control Verbs" in perlre.
\K
"\K escape" under "Regular expressions" in perl5100delta or "Look-Around Assertions" in perlre.
\R
"Vertical and horizontal whitespace, and linebreak" under "Regular expressions" in perl5100delta or "Misc" in perlrebackslash.
\gN
"Relative backreferences" under "Regular expressions" in perl5100delta or "Capture groups" in perlre.
readline()
"Default argument for readline()" in perl5100delta.
stack-file-test
"Stacked filetest operators" in perl5100delta.
/p
/p (preserve) modifier and ${^PREMATCH}, ${^MATCH} and ${^POSTMATCH} variables. Not mentioned in any Delta. See "Variables related to regular expressions" in perlvar.
5.012
package-version
"New package NAME VERSION syntax" in perl5120delta
...
"The ... operator" in perl5120delta or "The Ellipsis Statement" in perlsyn
each-array
"each, keys, values are now more flexible" in perl5120delta
keys-array
"each, keys, values are now more flexible" in perl5120delta
values-array
"each, keys, values are now more flexible" in perl5120delta
delete-local
"delete local" in perl5120delta
length-undef
See the ninth bullet in "Other potentially incompatible changes" in perl5120delta.
\N
"\N experimental regex escape" in perl5120delta.
while-readdir
readdir in a while-loop condition populates $_. Not mentioned in any delta, but see "readdir" in perlfunc.
5.014
?^
"Regular Expressions" in perl5140delta.
/r
"Regular Expressions" in perl5140delta and "Modifiers" in perlre.
/d
"Regular Expressions" in perl5140delta and "Modifiers" in perlre.
/l
"Regular Expressions" in perl5140delta and "Modifiers" in perlre.
/u
"Regular Expressions" in perl5140delta and "Modifiers" in perlre.
/a
"Regular Expressions" in perl5140delta and "Modifiers" in perlre.
auto-deref
"Array and hash container functions accept references" in perl5140delta. See also push, pop, shift, unshift, splice, keys, values, and each in perlfunc.
^GLOBAL_PHASE
See New global variable ${^GLOBAL_PHASE} under "Other Enhancements" in perl5140delta.
\o
"Regular-expressions" in perl5140delta.
5.016
No non-feature constructs were introduced in this version of Perl.
5.018
computed-labels
"Computed Labels" in perl5180delta
our-sub
"Lexical subroutines" in perl5180delta
state-sub
"Lexical subroutines" in perl5180delta
5.020
:prototype
"subs now take a prototype attribute" in perl5200delta
drand48
"rand now uses a consistent random number generator" in perl5200delta
%slice
"New slice syntax" in perl5200delta
unicode6.3
"Unicode 6.3 now supported" in perl5200delta
\p{Unicode}
See New \p{Unicode} regular expression pattern property in "Core Enhancements" in perl5200delta.
utf8-locale
"use locale now works on UTF-8 locales" in perl5200delta
AUTHOR
E. Choroba, <choroba at cpan.org>
BUGS
Please report any bugs or feature requests to bug-syntax-construct at rt.cpan.org, or through the web interface at http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Syntax-Construct. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.
You can also use GitHub, see below.
SUPPORT
You can find documentation for this module with the perldoc command.
perldoc Syntax::ConstructYou can also look for information at:
GitHub Repository
https://github.com/choroba/syntactic-construct
Feel free to report issues and submit pull requests.
RT: CPAN's request tracker (report bugs here)
AnnoCPAN: Annotated CPAN documentation
CPAN Ratings
Search CPAN
ACKNOWLEDGEMENTS
LICENSE AND COPYRIGHT
Copyright 2013 - 2014 E. Choroba.
This program is free software; you can redistribute it and/or modify it under the terms of the the Artistic License (2.0). You may obtain a copy of the full license at:
http://www.perlfoundation.org/artistic_license_2_0
Any use, modification, and distribution of the Standard or Modified Versions is governed by this Artistic License. By using, modifying or distributing the Package, you accept this license. Do not use, modify, or distribute the Package, if you do not accept this license.
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This license includes the non-exclusive, worldwide, free-of-charge patent license to make, have made, use, offer to sell, sell, import and otherwise transfer the Package with respect to any patent claims licensable by the Copyright Holder that are necessarily infringed by the Package. If you institute patent litigation (including a cross-claim or counterclaim) against any party alleging that the Package constitutes direct or contributory patent infringement, then this Artistic License to you shall terminate on the date that such litigation is filed.
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