---
title: "encode(_:into:)"
framework: swift
role: symbol
role_heading: Type Method
path: "swift/unicodecodec/encode(_:into:)"
---

# encode(_:into:)

Encodes a Unicode scalar as a series of code units by calling the given closure on each code unit.

## Declaration

```swift
static func encode(_ input: Unicode.Scalar, into processCodeUnit: (Self.CodeUnit) -> Void)
```

## Parameters

- `input`: The Unicode scalar value to encode.
- `processCodeUnit`: A closure that processes one code unit argument at a time.

## Discussion

Discussion For example, the musical fermata symbol (“𝄐”) is a single Unicode scalar value (\u{1D110}) but requires four code units for its UTF-8 representation. The following code uses the UTF8 codec to encode a fermata in UTF-8: var bytes: [UTF8.CodeUnit] = [] UTF8.encode("𝄐", into: { bytes.append($0) }) print(bytes) // Prints "[240, 157, 132, 144]"