Enum Data 

pub enum Data {
    Bytes(Vec<u8>),
    Retry,
}

WHY: Callers need to distinguish between actual data and transient “no data yet” signals when reading from TCP streams.

WHAT: Result of a single read batch — either real bytes or a retry signal.

HOW: Wraps the two possible outcomes of a non-blocking read() call into a type-safe enum that the caller can pattern-match on.

Variants

Bytes(Vec<u8>)

A batch of bytes successfully read from the source.

Retry

Yielded on WouldBlock, TimedOut, or Ok(0)-when-not-EOF. Signals the caller should retry (poll again later).

Trait Implementations

impl Clone for Data

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Data

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.