# partial_application
The `partial!` macro allows for partial application of a function.
`partial!(some_fn => arg0, _, arg2, _)` returns the closure `|x1, x3| some_fn(arg0, x1, arg2, x3)`.
Move closures are created by adding `move` in front of the function: `partial!(move ..)`
```rust
use partial_application::partial;
// When you're using the 2015 edition of Rust, you need to import the macro like this
#[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)
);
}
```