# notEqual

`import { notEqual } from "destack:assert";`

Assert that `actual` does not equal `expected`.

```ds title="notEqual"
export function notEqual<T>(actual: T, expected: T, message?: string | undefined): void
```

[language/library/src/assert/assert.ds:52:55](https://github.com/destack-sh/destack/blob/main/language/library/src/assert/assert.ds#L52-L55)