---
title: "..<(_:_:)"
framework: swift
role: symbol
role_heading: Operator
path: "swift/uint8/'.._(_:_:)"
---

# ..<(_:_:)

Returns a half-open range that contains its lower bound but not its upper bound.

## Declaration

```swift
static func ..< (minimum: Self, maximum: Self) -> Range<Self>
```

## Parameters

- `minimum`: The lower bound for the range.
- `maximum`: The upper bound for the range.

## Discussion

Discussion Use the half-open range operator (..<) to create a range of any type that conforms to the Comparable protocol. This example creates a Range<Double> from zero up to, but not including, 5.0. let lessThanFive = 0.0..<5.0 print(lessThanFive.contains(3.14))  // Prints "true" print(lessThanFive.contains(5.0))   // Prints "false" note: minimum <= maximum.