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morphism.rs

A structure for suspended closure composition in Rust

Example

let mut fm: Morphism<uint, uint> = Morphism::new();
for _ in range(0u, 100000u) {
    fm = fm.push(|:x| x + 42u);
}
let mut gm: Morphism<uint, uint> = Morphism::new();
for _ in range(0u, 100000u) {
    gm = gm.push(|:x| x - 42u);
}
let gm = gm
    .push(|:x| Some(x))
    .push(|:x| x.map(|y| y + 42u))
    .push(|:x| x.map(|y| y.to_string()));
assert_eq!(fm.then(gm).run(0u), Some(String::from_str("42")));

Documentation

See the API documentation here.

Requirements

Rust
Cargo

You can install both with the following:

$ curl -s https://static.rust-lang.org/rustup.sh | sudo sh

See Installing Rust for further details.

Usage

$ cargo build       ## build library and binary
$ cargo test        ## run tests in ./tests
$ cargo bench       ## run benchmarks in ./benches

Discussion