# RegexPattern.Options.insert(_:)

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

```
RegexPattern.Options.insert(_:)(newMember: Self.Element) -> (inserted: Bool, memberAfterInsert: Self.Element)
```

Adds the given element to the option set if it is not already a member.

In the following example, the `.secondDay` shipping option is added to
the `freeOptions` option set if `purchasePrice` is greater than 50.0. For
the `ShippingOptions` declaration, see the `OptionSet` protocol
discussion.

    let purchasePrice = 87.55

    var freeOptions: ShippingOptions = [.standard, .priority]
    if purchasePrice > 50 {
        freeOptions.insert(.secondDay)
    }
    print(freeOptions.contains(.secondDay))
    // Prints "true"

- Parameter newMember: The element to insert.
- Returns: `(true, newMember)` if `newMember` was not contained in
  `self`. Otherwise, returns `(false, oldMember)`, where `oldMember` is
  the member of the set equal to `newMember`.