SecureRandomErrorReason

Classifies secure entropy and async admission failure without fallback. Reasons allocate nothing; dispatch payload retains the original typed error.

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Module std.random

import std.random;

Public declaration contracts and authored examples. A page can document several related symbols. Implementation bodies are excluded.

pub enum SecureRandomErrorReason

Classifies secure entropy and async admission failure without fallback. Reasons allocate nothing; dispatch payload retains the original typed error.

SecureRandomErrorReason.Unavailable

Unavailable;

The provider cannot perform the entropy request.

PermissionDenied;

The platform denies access to entropy.

NativeFailure;

Native progress or operation failed.

InvalidInput;

An internal boundary rejected its input range.

Cancelled;

Cancellation prevented invocation; no output was written.

TaskDispatch;

Worker admission failed before invocation.

Reason: TaskDispatchError;

Exact bounded-dispatch rejection.

Documentation snapshot: October 24, 2026 About versions ↗