DurationDestination

Requires exact target-type construction from exact integer or finite IEEE time facts.

Module std.time

import std.time;

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DurationDestination

pub concept DurationDestination<Self>

Requires exact target-type construction from exact integer or finite IEEE time facts.

This compile-time structural protocol preserves caller-selected duration type and unit without a runtime witness or implicit nominal conversion. Implementors must check representation range and honor Exact/Floor/Ceil/NearestEven semantics. Finite error paths must never produce an endless duration. Self: Concrete destination duration type.

DurationDestination.ConvertMagnitude

requires static fn ConvertMagnitude(Value: readonly DurationMagnitude&,
        Period: DurationPeriod, Rounding: DurationRounding) -> Result<Self, DurationError>;

Converts exact count facts from an exact source period into this target. Value: Exact source sign/magnitude, borrowed only for this call. Period: Positive reduced source period. Rounding: Explicit precision selection. Return: Checked destination or finite period/precision/range error.