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Trait NullId

Source 
pub trait NullId<ID> {
    // Required method
    fn null_id() -> ID;
}
Expand description

A trait that defines how to choose the null (or invalid) Id.

Required Methods§

Source

fn null_id() -> ID

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§