swift_conformsToProtocol(metadata:protocol:)

swift_conformsToProtocol(metadata:protocol:)

Checks whether the type conforms to the given protocol.

public func swift_conformsToProtocol(
  metadata: Metadata,
  protocol: ProtocolDescriptor
) -> WitnessTable? 

Parameters

• metadata: Type metadata to check conformance of.
• protocol: The protocol to check to see if the type conforms to.

Returns

A witness table of the conformance if it does conform, or nil if it doesn't conform.