closure - A Macro for Individually Capturing Variables

This is a fork of the closure crate by Oliver Giersch which is no longer maintained.

This crate provides a macro which lets you write closures that can capture variables individually, either by moving, referencing, or transforming by a method.

Usage

Start by adding an entry to your Cargo.toml:

[dependencies]
closure = "0.3.0"

Then you can write closures like so:

use closure::closure;

let string = "move".to_string();
let x = 10;
let mut y = 20;
let rc = Rc::new(5);

let closure = closure!([move string, ref x, ref mut y, clone rc] move |arg: i32| {
    ...
});