---
title: "init(fromMetadataQueryString:)"
framework: foundation
role: symbol
role_heading: Initializer
path: "foundation/nspredicate/init(frommetadataquerystring:)"
---

# init(fromMetadataQueryString:)

Creates a predicate with a metadata query string.

## Declaration

```swift
init?(fromMetadataQueryString queryString: String)
```

## Parameters

- `queryString`: A metadata query string.

## Discussion

Discussion For details of the format of the query string, see File Metadata Query Expression Syntax.

## See Also

### Creating a Predicate

- [init(format:argumentArray:)](foundation/nspredicate/init(format:argumentarray:).md)
- [init(format:arguments:)](foundation/nspredicate/init(format:arguments:).md)
- [init(format:_:)](foundation/nspredicate/init(format:_:).md)
- [init(_:)](foundation/nspredicate/init(_:).md)
- [withSubstitutionVariables(_:)](foundation/nspredicate/withsubstitutionvariables(_:).md)
- [init(value:)](foundation/nspredicate/init(value:).md)
- [init(block:)](foundation/nspredicate/init(block:).md)