method from-loop
Documentation for method from-loop
assembled from the following types:
class Seq
From Seq
(Seq) method from-loop
multi method from-loop( --> Seq)multi method from-loop(, , : --> Seq)multi method from-loop(, , --> Seq)
These methods create new Seq
-based callbacks.
The first form produces an infinite Seq
by calling &body
each time a new element is requested, using the return value from &body
as the item. This emulates (or implements) a loop { body }
construct.
The second form calls &cond
before each call to &body
, and terminates the sequence if &cond
returns a false value. If $repeat
is set to a true value, the first call to &cond
is omitted, and &body
called right away. This emulates (or implements) while cond { body }
and repeat { body } while cond
loops.
The third form enables C-style looping by calling a third callback, &afterward
, after each call to &body
.