forceAndCall(n, FUN, ...)
FUN
.forceAndCall
calls the function FUN
with arguments
specified in ...
. If the value of FUN
is a closure
then the first n
arguments to the function are evaluated
(i.e. their delayed evaluation promises are forced) before executing
the function body. If the value of FUN
is a primitive then
the call FUN(...)
is evaluated in the usual way. forceAndCall
is intended to help defining higher order
functions like apply
to behave more reasonably when the
result returned by the function applied is a closure that captured its
arguments.
force
, promise
, closure
.