mwahlig

extension Publishers {
    private struct IndexedResult<T> {
        let index: Int
        let result: T
    }

    private struct IndexedPublisher<Upstream>: Publisher where Upstream: Publisher {
        typealias Output = IndexedResult<Upstream.Output>
        typealias Failure = Upstream.Failure

mwahlig

// Swift 2.3
UIFont.familyNames().sort().forEach({print($0)})

// Swift 3.0
UIFont.familyNames.sorted().forEach({print($0)})

mwahlig

NSArray *syms = [NSThread callStackSymbols];
if ([syms count] > 1) {
    NSLog(@"<%@ %p> %@ - caller: %@ ", [self class], self, NSStringFromSelector(_cmd),[syms objectAtIndex:1]);
} else {
    NSLog(@"<%@ %p> %@", [self class], self, NSStringFromSelector(_cmd));
}

mwahlig

- (void)printChildControllersForViewControllerRecursively:(UIViewController *)controller {
	NSMutableString *logString = [NSMutableString stringWithString:[NSString stringWithFormat:@"child controllers for controller: %@ ::: [", controller]];
	for (UIViewController *childController in controller.childViewControllers) {
		[logString appendString:[NSString stringWithFormat:@"child: %@", childController]];
		[self printChildControllersForViewControllerRecursively:childController];
	}
	NSLog(@"%@]",logString);
}

mwahlig

// Objective-C

NSLog(@"app dir: %@",[[[NSFileManager defaultManager] URLsForDirectory:NSDocumentDirectory inDomains:NSUserDomainMask] lastObject]);

// Swift

println("app dir: \(NSArray(array:NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)).lastObject)")

mwahlig

Set a symbolic breakpoint for the symbol CGPostError

mwahlig

KEYWORDS="TODO:|FIXME:|\?\?\?:|\!\!\!:"
find "${SRCROOT}" \( -name "*.h" -or -name "*.m" \) -print0 | xargs -0 egrep --with-filename --line-number --only-matching "($KEYWORDS).*\$" | perl -p -e "s/($KEYWORDS)/ warning: \$1/"

mwahlig

rm -rf ~/Library/Developer/Xcode/DerivedData/ModuleCache/*