Trait GridCell 

pub trait GridCell:
    TryFrom<char>
    + Clone
    + Copy
    + PartialEq
    + Eq { }

Trait to implement a type that can be used as a grid cell with pparsing and display functionalities.

The trait itself is empty but requires to implement TryFrom<char>. This trait is most useful by using the derive macro and specifying assiciated char values.

use game_grid::*;
#[derive(GridCell, Copy, Clone, Debug, PartialEq, Eq, Default)]
enum Cell {
    // Wall cells are represented by '#'.
    #[cell('#')]
    Wall,

    // Empty cells are represented by both ' ' and '.', the former will be used for display.
    // A default value can be used by some Grid functionalities.
    #[cell(' '|'.')]
    #[default]
    Empty,
     
    #[cell('o')]
    Food,

    // It is also possible to provide a range, the actual character can be captured.
    #[cell('A'..='Z')]
    Player(char),
}

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors