# TmuxVersion...<(_:)

- **Module:** TmuxVersion
- **Package:** libtmux-swift
- **Language:** Swift
- **Kind:** function
- **Page:** https://libtmux.org/reference/swift/tmuxversion-(_-)-1hv5/

```
TmuxVersion...<(_:)(maximum: Self) -> PartialRangeUpTo<Self>
```

Returns a partial range up to, but not including, its upper bound.

Use the prefix half-open range operator (prefix `..<`) to create a
partial range of any type that conforms to the `Comparable` protocol.
This example creates a `PartialRangeUpTo<Double>` instance that includes
any value less than `5.0`.

    let upToFive = ..<5.0

    upToFive.contains(3.14)       // true
    upToFive.contains(6.28)       // false
    upToFive.contains(5.0)        // false

You can use this type of partial range of a collection's indices to
represent the range from the start of the collection up to, but not
including, the partial range's upper bound.

    let numbers = [10, 20, 30, 40, 50, 60, 70]
    print(numbers[..<3])
    // Prints "[10, 20, 30]"

- Parameter maximum: The upper bound for the range.

- Precondition: `maximum` must compare equal to itself (i.e. cannot be NaN).