Trait Read 

pub trait Read<I: Identifier>: Context {
    type Buffer: Buffer;

    // Required method
    fn read(&self, ident: I) -> Option<Self::Buffer>;

    // Provided methods
    fn read_spec(&self, ident: I) -> Option<Spec<Self::Buffer>> { ... }
    fn read_shape(&self, ident: I) -> Option<ShapeOf<Self::Buffer>> { ... }
}

Trait for reading entries out of a Context.

Required Associated Types

type Buffer: Buffer

The buffer type associated with the identifier I.

Required Methods

fn read(&self, ident: I) -> Option<Self::Buffer>

Returns a copy of the value associated with ident, if it exists.

Provided Methods

fn read_spec(&self, ident: I) -> Option<Spec<Self::Buffer>>

Returns a specification of the value associated with ident, if it exists.

fn read_shape(&self, ident: I) -> Option<ShapeOf<Self::Buffer>>

Returns the shape of the value associated with ident, if it exists.

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