routine ( )
Documentation for routine ( )
assembled from the following types:
language documentation Operators
From Operators
(Operators) term ( )
The grouping operator.
An empty group ()
creates an empty list. Parentheses around non-empty expressions simply structure the expression, but do not have additional semantics.
In an argument list, putting parenthesis around an argument prevents it from being interpreted as a named argument.
multi sub p(:!)multi sub p()p a => 1; # OUTPUT: «named»p (a => 1); # OUTPUT: «positional»
language documentation Operators
From Operators
(Operators) postcircumfix ( )
The call operator treats the invocant as a Callable and invokes it, using the expression between the parentheses as arguments.
Note that an identifier followed by a pair of parentheses is always parsed as a subroutine call.
If you want your objects to respond to the call operator, implement a method CALL-ME
.