Crate effect_cell

EffectCell

A container that runs an effect every time its data is mutated. In essence, a slimed down implementation of the Observer pattern using Rust’s Fn trait.

use effect_cell::EffectCell;

fn main() {
    let mut effect_cell = EffectCell::new(0);
    effect_cell.bind(|data| {println!("{data}");});
    effect_cell.update(1);
    // Prints "1"
}

Operator Passthrough

The XAssign traits have been setup so that they can modify the internal data without the need for a call through update_lambda. They will always call effects.

use effect_cell::EffectCell;

fn main() {
    let mut effect_cell = EffectCell::new(0);
    effect_cell.bind(|data| {println!("{data}");});
    effect_cell += 1;
    // Prints "1"
}

License

Licensed under either of

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

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.

Structs

• EffectCell
  A container that runs one or many effects on data mutation. The effect is run after data is updated as per the conventions of the Observer data structure. Effects are run in the order that they were bound to EffectCell in.
• OrderedEffectCell
  A container that runs one or many effects on data mutation. Effects are run either before or after data is updated depending on their EffectOrder Effects are run in the order that they were bound to each EffectOrder in OrderedEffectCell.

Enums

• EffectOrder
  Represents whether an effect should be called before or after data is updated