Experience GraphQL Summit 2024: 45+ sessions, success stories, demos, and more. Watch on-demand

Experience GraphQL Summit 2024

Search Apollo content (Cmd+K or /)

Launch GraphOS Studio

Home Home Get Started Get Started GraphOS Platform GraphOS Platform Schema Design Schema Design Routing Routing Reference Reference

Apollo iOS Apollo iOS

You are viewing documentation for a previous version of this software.

Switch to the latest stable version.

OptionalType

PROTOCOL

`OptionalType`

Swift

1public protocol OptionalType: ExpressibleByNilLiteral

Provides a PAT interface to Optional<T>

Properties

`underlying`

Swift

1var underlying: WrappedType?