Morse-Code’s gists

Morse-Code / stringReverse.c

Created April 4, 2013 12:36

Reverse a C string using bitwise XOR operator.

	void stringReverse(char *str)
	{
	char p1, p2;

	if (!str \|\| !*str)
	{
	NSLog(@"No string passed into reverse function.");
	}
	for (p1 = str, p2 = str + strlen(str) - 1; p2 > p1; ++p1, --p2)
	{

Morse-Code / removeNonAlphaNum.c

Created April 4, 2013 12:41

Remove non-alphanumeric characters from a C string.

	void stringRemoveNonAlphaNum(char *str)
	{
	unsigned long i = 0;
	unsigned long j = 0;
	char c;

	while ((c = str[i++]) != '\0')
	{
	if (isalnum(c))
	{

Morse-Code / locale.m

Created April 5, 2013 11:01

Getting a locale to match the user's language preference.

	/*
	Getting a locale to match the user's language preference
	*/
	// You’d think you could just use:

	[NSLocale currentLocale];

	// But you’d be wrong. Instead, go with:

	[[NSLocale alloc] initWithLocaleIdentifier:[NSLocale preferredLanguages][0]];

Morse-Code / UntoggleableSwitch.h

Last active December 15, 2015 20:28 — forked from irace/gist:5272146

Custom UISwitch subclass to control switch state programmatically.

	@interface UntoggleableSwitch : UISwitch

	@end

Morse-Code / gist:5318508

Last active December 15, 2015 20:28 — forked from irace/gist:5216137

Using Core Data as a cache; handling store migrations.

	/*
	Core Data is great but automatic migrations can be tricky. Migrations can take a long time, which could
	result in [your app being terminated](http://stackoverflow.com/questions/13333289/core-data-timeout-adding-persistent-store-on-application-launch)
	if it is happening on the main thread during application launch. Performing migrations on a background
	thread is also a [bad idea](http://stackoverflow.com/a/2866725/503916), meaning your application really
	needs to be able to fully launch without a Core Data stack whatsoever in order to safely migrate.
	This can be a huge change to make to an existing app.

	If you're really only using Core Data as a cache, you don't actually need to perform a migration.
	Simply check if the existing store is compatible with your managed object model and if so, delete

Morse-Code / ternary.m

Created April 6, 2013 20:38

Objective-C Ternary Trick One unique ability of using the ternary operand with objects is that the code can be shorted even further – if the value being checked is also the value after the ternary operator, the value can be omitted from the operation:

	- (void)displayErrorMessage:(NSString *)msg
	{
	// Even shorter version, when the operand is also the "True" case:
	NSString *msgFullString = [NSString stringWithFormat:@"Message: %@", msg ? : @"Unknown error"];

	NSLog(@"%@", msgFullString);
	}

Morse-Code / ternary.m

Created April 6, 2013 20:41

Objective-C Ternary Trick One unique ability of using the ternary operand with objects is that the code can be shorted even further – if the value being checked is also the value after the ternary operator, the value can be omitted from the operation:

	- (void)displayErrorMessage:(NSString *)msg
	{
	// Even shorter version, when the operant is the same as the "True" case:
	NSString *msgFullString = [NSString stringWithFormat:@"Message: %@", msg ? : @"Unknown error"];

	NSLog(@"%@", msgFullString);
	}

Morse-Code / directoryListing.m

Created April 6, 2013 21:53

List contents of directory and all sub-directories.

	NSFileManager*fileMgr;
	NSString*entry;
	NSString*documentsDir;
	NSDirectoryEnumerator*enumerator;
	BOOL isDirectory;
	// Create file manager
	fileMgr =[NSFileManager defaultManager];
	// Path to documents directory
	documentsDir =[NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
	// Change to Documents directory[fileMgr changeCurrentDirectoryPath:documentsDir];

Morse-Code / uiappearance-selector.md

Created April 9, 2013 12:32 — forked from mattt/uiappearance-selector.md

Generate the list yourself:

$ cd /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/
  Developer/SDKs/iPhoneOS*.sdk/System/Library/Frameworks/UIKit.framework/Headers
$ grep -H UI_APPEARANCE_SELECTOR ./* | sed 's/ __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_5_0) UI_APPEARANCE_SELECTOR;//'

UIActivityIndicatorView

Morse-Code / ToggleMapType.m

Created April 29, 2013 03:03

MapKit map type three way toggle.

	- (IBAction)toggleMapType:(id)sender
	{
	NSLog(@"toggleMapType");

	mapType = (mapType + 1) % 3;

	if (mapType == 0) {
	self.dangerMap.mapType = MKMapTypeStandard;
	}
	else if (mapType == 1) {

Christopher Morse Morse-Code

UIActivityIndicatorView