parrots

@import WatchKit;

@interface CachingInterfaceController : WKInterfaceController

- (void)updateLabel:(WKInterfaceLabel *)label withString:(NSString *)string;
- (void)updateLabel:(WKInterfaceLabel *)label asHidden:(BOOL)hidden;
- (void)updateImage:(WKInterfaceImage *)image withImageNamed:(NSString *)imageName;
- (void)updateImage:(WKInterfaceImage *)image withBaseNameForAnimation:(NSString *)baseName withRange:(NSRange)range duration:(NSTimeInterval)duration repeatCount:(NSInteger)repeatCount;
- (NSString *)currentImageNameForImage:(WKInterfaceImage *)image;

russbishop

/// Appends a value to an array within a dictionary without triggering a copy.
/// Necessary in Swift 3 but expected to be obsoleted as the way inout works
/// will be changed (eliminating the need for the write-back copy)
func append<K, V>(value: V, toKey key: K, in dict: inout [K : Array<V>]) {
    var a: [V]? = []
    swap(&a, &dict[key])
    a = a ?? []
    a!.append(value)
    swap(&a, &dict[key])