---
title: "init(coder:)"
framework: foundation
role: symbol
role_heading: Initializer
path: "foundation/nsexpression/init(coder:)"
---

# init(coder:)

Creates an expression by decoding from the coder you specify.

## Declaration

```swift
init?(coder: NSCoder)
```

## Parameters

- `coder`: The coder to read data from.

## See Also

### Creating an Expression

- [init(expressionType:)](foundation/nsexpression/init(expressiontype:).md)
- [init(format:argumentArray:)](foundation/nsexpression/init(format:argumentarray:).md)
- [init(format:arguments:)](foundation/nsexpression/init(format:arguments:).md)
- [init(format:_:)](foundation/nsexpression/init(format:_:).md)