7 ['\N{named character}'],
10 ['sub :locked :method'],
11 ['open $fh, $mode, $expr'],
13 release => '2000-03-23',
20 release => '2002-07-18',
24 ['//', 'defined-or operator'],
25 ['~~', 'smart-match operator to compare different data types'],
26 ['given', 'switch statement to smart-match with when/default'],
27 ['/(?<name>)/ and $+{name}', 'named caputer buffers'],
28 ['s/keep\K//', 'floating positive lookbehind, efficient alternative for s/(keep)/$1/'],
29 ['/\v/, /\h/', 'vertical and horizontal whitespace escapes'],
30 ['my $_', 'lexically scoped version of the default variable'],
32 release => '2007-12-18',
36 ['package version', 'package NAME VERSION shorthand for our $VERSION"'],
37 ['...', 'yada-yada operator: code placeholder'],
38 ['use strict', 'Implicit strictures if use VERSION >= 5.12'],
39 ['... when', '"when" is now allowed to be used as a statement modifier'],
41 release => '2010-04-12',
45 ['s///r', 'non-destructive substitution'],
46 ['/(?^)/', 'construct to reset to default modifiers'],
47 ['/(?{ m// })/', 'regular expressions can be nested in /(?{})/ and /(??{})/'],
48 ["use re '/flags'", 'customize default modifiers'],
49 ['each $ref e.a.', 'array and hash container functions accept references'],
51 release => '2011-05-14',
55 ['__SUB__', 'current subroutine reference'],
56 ['fc, "\F"', 'unicode foldcase to compare case-insensitively'],
57 ['"\N{}"', 'automatic use charnames qw( :full :short )'],
59 release => '2012-05-20',