---
title: "isContinuation(_:)"
framework: swift
role: symbol
role_heading: Type Method
path: "swift/unicode/utf8/iscontinuation(_:)"
---

# isContinuation(_:)

Returns a Boolean value indicating whether the specified code unit is a UTF-8 continuation byte.

## Declaration

```swift
static func isContinuation(_ byte: Unicode.UTF8.CodeUnit) -> Bool
```

## Parameters

- `byte`: A UTF-8 code unit.

## Return Value

Return Value true if byte is a continuation byte; otherwise, false.

## Discussion

Discussion Continuation bytes take the form 0b10xxxxxx. For example, a lowercase “e” with an acute accent above it ("é") uses 2 bytes for its UTF-8 representation: 0b11000011 (195) and 0b10101001 (169). The second byte is a continuation byte. let eAcute = "é" for codeUnit in eAcute.utf8 {     print(codeUnit, UTF8.isContinuation(codeUnit)) } // Prints "195 false" // Prints "169 true"