AsyncReader
Defines a structural safe mutable byte-stream operation. Reads asynchronously while source/output loans remain live through completion. Successful/failed transfer counts may not exceed the supplied byte view. Implementations document blocking, retention and cancellation; the concept introduces no box, allocation, global stream or implicit event loop.
Module std.io
import std.io;Public declaration contracts and authored examples. A page can document several related symbols. Implementation bodies are excluded.
AsyncReader
pub concept AsyncReader<Self>Defines a structural safe mutable byte-stream operation. Reads asynchronously while source/output loans remain live through completion. Successful/failed transfer counts may not exceed the supplied byte view. Implementations document blocking, retention and cancellation; the concept introduces no box, allocation, global stream or implicit event loop. Self: Concrete mutable stream state.
AsyncReader.ReadAsync
requires fn ReadAsync(Output: mut byte[], Token: CancellationToken) -> Task<Result<usize, IoError>>;Starts a safe bounded byte transfer. Output: Borrowed writable output slice; backing must remain valid through completion. Token: Owned cancellation observation for this operation. Return: Task yielding accepted/transferred byte count or portable failure with partial prefix.