Trait FromIndex

pub trait FromIndex: Index + Sized {
    // Required methods
    fn from_index(index: <Self as Index>::Type) -> Option<Self>;
    unsafe fn from_index_unchecked(index: <Self as Index>::Type) -> Self;
}

Derive this trait for an enum automatically using #[derive(EnumFromIndex)]

Required Methods

fn from_index(index: <Self as Index>::Type) -> Option<Self>

Tries to construct Self from an index based on the variants’ defined order

unsafe fn from_index_unchecked(index: <Self as Index>::Type) -> Self

Constructs Self from an index based on the variants’ defined order

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