Enum CopyState 

#[doc(hidden)]
pub(crate) enum CopyState {
    Ended(u64),
    Fallback(u64),
}

🔬This is a nightly-only experimental API. (core_io_internals)

Used as a part of copy specialization to communicate how many bytes were copied, and whether copying is done.

• Ended(n) indicates copying completed, moving a total of n bytes.
• Fallback(n) indicates copying is might not be complete, and so far n bytes have been copied using specialization. The remaining must be copied using a fallback implementation.

If a particular Read and Write combination do not implement a specialized copy routine, the specialized function will return Fallback(0).

Variants

Ended(u64)

🔬This is a nightly-only experimental API. (core_io_internals)

Fallback(u64)

🔬This is a nightly-only experimental API. (core_io_internals)

Trait Implementations

impl Debug for CopyState

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

Formats the value using the given formatter.