Const Closure

This crate allows using macros to automatically create closure like types/values.

This works by implementing the Fn* traits for a struct containing all the values captured form the environment.

Because of restrictions of declarative macros the used syntax is less than ideal, but it is a lot better than manual implementations of the Fn* traits.

For details of the Syntax see: const_closure.

Requirements

This crate requires a nightly compiler.

Example

```rust

![feature(unboxed_closures)]

![feature(fn_traits)]

![feature(consttraitimpl)]

![feature(constmutrefs)]

![feature(constrefsto_cell)]

![feature(const_ops)]

use constclosure::constclosure;

const FROMCLOSURE: i32 = { let base = 5; let calc = constclosure!([base: i32] (offset: i32) -> i32 { base + offset }); calc(-2) }; asserteq!(FROMCLOSURE, 3) ```

Authors

raldone01 and onestacked are the primary authors and maintainers of this library.

License

This project is released under either:

• MIT License
• Apache License (Version 2.0)

at your choosing.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.