Execute a function that returns an Option on the Option value if it exists.

Returns `false` if `None` or returns the boolean result of the application of the given predicate to the `Some` value.

Removes one level of nesting.

Constructor of Option from any couple of mutually exclusive `value` and `error`.

Constructor of Option from any lazy function that returns a couple of mutually exclusive `value` and `error`.

Constructor of Option from a predicate.

Extracts the value out of the Option, if it exists.

Helper to check if the Option is missing the value.

Helper to check if the Option has a value.

Execute the function on the Option value if it exists.

Extracts the value out of the Option, if it exists, with a function.

Constructor for Option without a value.

Constructor for Option with a value.

Base struct.