API Differences in Foundation in macOS 26.1

It can be difficult to find what changed in Apple SDKs. These pages are algorithmically generated and show what is new in Foundation in the macOS 26.1 SDK.

Table of Contents

Properties & Constants

URLRequest
public var allowsUltraConstrainedNetworkAccess: Swift.Bool
NSURLRequest
@property(atomic, readonly) BOOL allowsUltraConstrainedNetworkAccess;
NSMutableURLRequest
@property(atomic, assign, unsafe_unretained, readwrite) BOOL allowsUltraConstrainedNetworkAccess;
NSURLSessionConfiguration
@property(atomic, assign, unsafe_unretained, readwrite) BOOL allowsUltraConstrainedNetworkAccess;
@property(atomic, readonly, getter = isiOSAppOnVision) BOOL iOSAppOnVision;

Enum Cases

NetworkUnavailableReason
case ultraConstrained

Functions & Methods

- (BOOL)isiOSAppOnVision;