Function contains

contains<T>(x: T): (opt: Option.Option<T>) => boolean
Checks whether the optional opt contains x value.
Type Parameters
- T
Parameters
- x: T
  The value to check.
Returns (opt: Option.Option<T>) => boolean
Whether x is contained.

Examples
Example
```
const hasTwo = contains(2);

expect(hasTwo(some(2))).toStrictEqual(true);
expect(hasTwo(some(3))).toStrictEqual(false);
expect(hasTwo(none())).toStrictEqual(false);
```
- Defined in src/option.ts:702