635 B
635 B
Basis Combinator Use a Boolean value to select and run one of two quoted programs. false [F] [T] branch
F
true [F] [T] branch
-------------------------
T
Definition
[rolldown] [choice] [i]
Discussion
This is one of the fundamental operations (although it can be defined in terms of [choice] as above). The more common "if..then..else" construct [ifte] adds a predicate function that is evaluated [nullary].
Crosslinks
[choice] [ifte] [select]