# RegexPattern.Options.remove(_:)

- **Module:** RegexPattern.Options
- **Package:** libtmux-swift
- **Language:** Swift
- **Kind:** method
- **Page:** https://libtmux.org/reference/swift/regexpattern-options-remove(_-)/

```
RegexPattern.Options.remove(_:)(member: Self.Element) -> Self.Element?
```

Removes the given element and all elements subsumed by it.

In the following example, the `.priority` shipping option is removed from
the `options` option set. Attempting to remove the same shipping option
a second time results in `nil`, because `options` no longer contains
`.priority` as a member.

    var options: ShippingOptions = [.secondDay, .priority]
    let priorityOption = options.remove(.priority)
    print(priorityOption == .priority)
    // Prints "true"

    print(options.remove(.priority))
    // Prints "nil"

In the next example, the `.express` element is passed to `remove(_:)`.
Although `.express` is not a member of `options`, `.express` subsumes
the remaining `.secondDay` element of the option set. Therefore,
`options` is emptied and the intersection between `.express` and
`options` is returned.

    let expressOption = options.remove(.express)
    print(expressOption == .express)
    // Prints "false"
    print(expressOption == .secondDay)
    // Prints "true"

- Parameter member: The element of the set to remove.
- Returns: The intersection of `[member]` and the set, if the
  intersection was nonempty; otherwise, `nil`.