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robin / gist:62684
Created Feb 12, 2009
round corner uiimage
View gist:62684
#import "ImageManipulator.h"
@implementation ImageManipulator
static void addRoundedRectToPath(CGContextRef context, CGRect rect, float ovalWidth, float ovalHeight)
float fw, fh;
if (ovalWidth == 0 || ovalHeight == 0) {
CGContextAddRect(context, rect);
View Format code script for Xcode
~/Applications/UniversalIndentGUI/indenters/uncrustify -l OC -q -c ~/Applications/UniversalIndentGUI/config/uncrustify_obj_c.cfg
odrobnik / gist:1789418
Created Feb 10, 2012
Asynchronous Deletion
View gist:1789418
// DTAsyncFileDeleter.m
// DTFoundation
// Created by Oliver Drobnik on 2/10/12.
// Copyright (c) 2012 Cocoanetics. All rights reserved.
#import "DTAsyncFileDeleter.h"
bsneed / NSObject+RFExtensions.h
Created Oct 6, 2012
perform a block in a background thread, and call a completion block on the main thread when its done.
View NSObject+RFExtensions.h
// NSObject+RFExtensions.h
// Created by brandon on 10/5/12.
// Copyright (c) 2012 All rights reserved.
#import <Foundation/Foundation.h>
typedef void (^NSObjectPerformBlock)(id userObject);
subdigital / pns.m
Created Jan 5, 2013
What are your favorite Xcode Snippets? Add them in the comments.
View pns.m
// Property Nonatomic Strong
// Platform: All
// Completion Scopes: ClassInterfaceMethods
@property (nonatomic, strong) <# class_name #> *<# variable_name #>;
kvnsmth /
Last active Jul 24, 2019
A real world usage for git subtrees.

Let's say you have an iOS project, and you want to use some external library, like AFNetworking. How do you integrate it?

With submodules

Add the project to your repo:

git submodule add Vendor/AFNetworking

or something to that effect.

View App Store Refund
You can get a refund for any app on the App Store by following this process:
1. Visit
2. Sign In with your Apple ID.
3. Click “Report a Problem” on the offending app.
4. Choose “Problem is not listed here” and be sure to mention that you are asking for a refund because it doesn’t work as expected.
mackworth / Obectivej-C to Swift Syntax
Last active Oct 13, 2017
Table showing the major translations from Objective-C to Swift syntax
View Obectivej-C to Swift Syntax

Conversion Process from Objective-C syntax to Swift The most important first step is to run Apple's "Convert to Modern Objective-C Syntax" refactoring, so that you're using array/dictionary literals and bracket-accesses; these will then be usable in Swift. Note also that I'm a beginner in Swift, so my apologies for any mistakes or incompleteness here.

When you see this pattern Replace with this
@interface *newType* : *superType* <*protocol1*, *protocol2*> class *newType* : *superType*, *protocol1*, *protocol2*
@implementation OR @synthesize OR @end Delete
CodaFi / Free.swift
Created Sep 20, 2014
Free Monads in Swift
View Free.swift
// Free.swift
// Swift_Extras
// Created by Robert Widmann on 9/19/14.
// Copyright (c) 2014 Robert Widmann. All rights reserved.
import Foundation
marcoarment / gist:1105553afba6b4900c10
Created Oct 21, 2014
Variable-height UITableView tableHeaderView with autolayout
View gist:1105553afba6b4900c10
// in a UITableViewController (or any other view controller with a UITableView)
- (void)viewWillTransitionToSize:(CGSize)size withTransitionCoordinator:(id<UIViewControllerTransitionCoordinator>)coordinator
UIView *header = [[UIView alloc] initWithFrame:CGRectMake(0, 0, size.width, 0)];
header.translatesAutoresizingMaskIntoConstraints = NO;
// [add subviews and their constraints to header]
NSLayoutConstraint *headerWidthConstraint = [NSLayoutConstraint
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