---
title: PredicateExpressions.SequenceStartsWith
framework: foundation
role: symbol
role_heading: Structure
path: foundation/predicateexpressions/sequencestartswith
---

# PredicateExpressions.SequenceStartsWith

## Declaration

```swift
struct SequenceStartsWith<Base, Prefix> where Base : PredicateExpression, Prefix : PredicateExpression, Base.Output : Sequence, Prefix.Output : Sequence, Base.Output.Element : Equatable, Base.Output.Element == Prefix.Output.Element
```

## Topics

### Initializers

- [init(base:prefix:)](foundation/predicateexpressions/sequencestartswith/init(base:prefix:).md)

### Instance Properties

- [base](foundation/predicateexpressions/sequencestartswith/base.md)
- [prefix](foundation/predicateexpressions/sequencestartswith/prefix.md)

## Relationships

### Conforms To

- [Copyable](swift/copyable.md)
- [Decodable](swift/decodable.md)
- [Encodable](swift/encodable.md)
- [Escapable](swift/escapable.md)
- [PredicateExpression](foundation/predicateexpression.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)
- [StandardPredicateExpression](foundation/standardpredicateexpression.md)