partial

generates a function based on a partial apply

Returns a new function whose initial arguments are pre-bound to those provided. When that function is invoked, any provided arguments will simply be appended to the pre-bound arguments before calling the original function.

An Example

(define plus10 (partial + 4 6))
(plus10 9)

This example will return 19 as though (+ 4 6 9) were called.