ResultError

Borrows the error payload with readonly access when its case is active.

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Module std.prelude

import std.prelude;

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ResultError

pub fn ResultError<T, E>(Value: readonly Result<T, E>&) -> readonly E&?

Borrows the error payload with readonly access when its case is active. T: Success payload, including void. E: Error payload. Value: Wrapper borrowed for the returned reference lifetime. Return: Optional readonly payload reference, or none for the opposite case. Warning: No owner retention; case change, move or destruction invalidates this borrow.

ResultError

pub fn ResultError<T, E>(Value: mut Result<T, E>&) -> mut E&?

Borrows the error payload with mut access when its case is active. T: Success payload, including void. E: Error payload. Value: Wrapper borrowed for the returned reference lifetime. Return: Optional mut payload reference, or none for the opposite case. Warning: No owner retention; case change, move or destruction invalidates this borrow.

Documentation snapshot: October 24, 2026 About versions ↗