Matt Wahlig mwahlig

iOS Developer. Mechanical keyboard enthusiast.

mwahlig / ZipManyPublisher.swift

Last active February 17, 2024 02:15

a Combine Publisher that allows for zipping an array of publishers while maintaining their index

	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 / font-families.swift

Created November 7, 2016 22:23

Print Available Font Families

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

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

mwahlig / printCallingFunction.m

Created August 7, 2015 17:40

Print name of calling function to debug log

	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 / gist:1eface9c6e89c34b9e08

Created June 8, 2015 16:19

Recursively Print Child VC

	- (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 / gist:8045acfaa3bf5768a938

Last active August 29, 2015 14:13

Print iOS application directory on box

	// 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 / gist:1918ea21114ae38c0ccc

Created November 26, 2014 16:35

CoreGraphics symbolic breakpoint

Set a symbolic breakpoint for the symbol CGPostError

mwahlig / gist:605ddf895bb56e2e511f

Created November 21, 2014 06:18

Script to turn TODO/FIXME into warnings in Xcode

	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 / gist:af5e4751ef9a69314c01

Created June 27, 2014 04:39

Clear Derived Data Module Cache Command

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

	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/"