- creates list
- and also a general parenthesiser
Used as a brace pair or quote pair
() creates "capture literal"
Operators containing this character
\() creates a Capture literal wrapped in a scalar
|() creates a Capture literal and then flattens it
:() creates a Signature object and is used in closure parameters
As an adverb
() can be used as a parenthesizer in adverbs
Old, deprecated, or other language uses
() used to be considered a list constructor but is more strictly a capture now.