partial_application

This crate contains the partial! macro which allows partial application of a function. Calling partial!(some_fn(arg0, _, arg2, _)) will return the closure |x1, x3| some_fn(arg0, x1, arg1, x3). The function call parentheses are optional: partial!(some_fn arg0, _, arg2, _)

Move closures can be created by adding move in front of the function: partial!(move ..)

#[macro_use]
extern crate partial_application;

fn foo(a: i32, b: i32, c: i32, d: i32, mul: i32, off: i32) -> i32 {
    (a + b*b + c.pow(3) + d.pow(4)) * mul - off
}

fn main() {
    let bar = partial!( foo(_, _, 10, 42, 10, 10) );
    assert_eq!(
        foo(15, 15, 10, 42, 10, 10),
        bar(15, 15)
    );
}