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

# init(format:_:)

Creates the expression with the expression format and arguments list you specify.

## Declaration

```swift
convenience init(format expressionFormat: String, _ args: any CVarArg...)
```

## Parameters

- `expressionFormat`: The expression format.
- `args`: A list of arguments to insert into the expressionFormat string.

## 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(coder:)](foundation/nsexpression/init(coder:).md)