Dart
Dart
HTML Canvas
HTML Canvas
Redis
Redis
Bash
Bash
JavaScript
JavaScript
Regular Expressions

Asserções

?=
Lookahead assertion
?!
Negative lookahead
?<=
Lookbehind assertion
?!= or ?<!
Negative lookbehind
?>
Once-only Subexpression
?()
Condition [if then]
?()|
Condition [if then else]
?#
Comment
Comments
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