rastersize’s gists

MrRooni / gist:4988922

Created February 19, 2013 19:16

UITableView and NSFetchedResultsController: Updates Done Right

	@interface SomeViewController ()

	// Declare some collection properties to hold the various updates we might get from the NSFetchedResultsControllerDelegate
	@property (nonatomic, strong) NSMutableIndexSet *deletedSectionIndexes;
	@property (nonatomic, strong) NSMutableIndexSet *insertedSectionIndexes;
	@property (nonatomic, strong) NSMutableArray *deletedRowIndexPaths;
	@property (nonatomic, strong) NSMutableArray *insertedRowIndexPaths;
	@property (nonatomic, strong) NSMutableArray *updatedRowIndexPaths;

	@end

0xced / NSObject+Subclasses.h

Last active September 4, 2017 06:37

NSObject category to get subclasses

	#import <Foundation/Foundation.h>

	@interface NSObject (Subclasses)

	+ (NSSet *) subclasses_xcd;

	@end

mattt / uiappearance-selector.md

Last active February 7, 2025 15:27

A list of methods and properties conforming to `UIAppearance` as of iOS 12 Beta 3

Generate the list yourself:

$ cd /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS*.sdk/System/Library/Frameworks/UIKit.framework/Headers
$ grep UI_APPEARANCE_SELECTOR ./*     | \
  sed 's/NS_AVAILABLE_IOS(.*)//g'     | \
  sed 's/NS_DEPRECATED_IOS(.*)//g'    | \
  sed 's/API_AVAILABLE(.*)//g'        | \
  sed 's/API_UNAVAILABLE(.*)//g'      | \
 sed 's/UI_APPEARANCE_SELECTOR//g' | \

bobmoff / UIView+ModifyFrame.h

Last active November 27, 2021 06:58

Simple but really useful category on UIView that makes modifying the frame NOT hellish. Published under WTFPL [http://www.wtfpl.net/]. Usage example can be found in the comments

	/*

	Before:
	CGRect frame = myView.frame;
	frame.origin.x = newX;
	myView.frame = frame;

	After:
	myView.x = newX;

indragiek / gist:5297435

Last active March 5, 2023 21:55

Draft of a ReactiveCocoa based interface for CoreData

	//
	// FGOManagedObjectContextStack.h
	//
	// Created by Indragie Karunaratne on 2012-12-23.
	//

	#import <Foundation/Foundation.h>

	typedef void (^FGOConfigurationBlock)(id);

mayoff / open.sh

Last active April 5, 2018 23:46

bash completion for the `-a` and `-b` flags of the Mac OS X `open` command

	#
	# This is a set of bash function definitions, and a bash command, that
	# set up bash completion for the Mac OS X "open" command.
	#
	# HOW TO USE
	#
	# Add this command to your .bashrc:
	#
	# . open.sh
	#

steipete / PSPDFViewController.h

Last active June 6, 2017 03:56

This method will help to prevent a lot of emails about "weird bugs".

	// Defines a yet undocumented method to add a warning if super isn't called.
	#ifndef NS_REQUIRES_SUPER
	#if __has_attribute(objc_requires_super)
	#define NS_REQUIRES_SUPER __attribute((objc_requires_super))
	#else
	#define NS_REQUIRES_SUPER
	#endif
	#endif

	@interface UIViewController (SubclassingWarnings)

steipete / PSPDFUIKitMainThreadGuard.m

Last active May 27, 2024 12:11

This is a guard that tracks down UIKit access on threads other than main. This snippet is taken from the commercial iOS PDF framework http://pspdfkit.com, but relicensed under MIT. Works because a lot of calls internally call setNeedsDisplay or setNeedsLayout. Won't catch everything, but it's very lightweight and usually does the job.You might n…

	// Taken from the commercial iOS PDF framework http://pspdfkit.com.
	// Copyright (c) 2014 Peter Steinberger, PSPDFKit GmbH. All rights reserved.
	// Licensed under MIT (http://opensource.org/licenses/MIT)
	//
	// You should only use this in debug builds. It doesn't use private API, but I wouldn't ship it.

	// PLEASE DUPE rdar://27192338 (https://openradar.appspot.com/27192338) if you would like to see this in UIKit.

	#import <objc/runtime.h>
	#import <objc/message.h>

boredzo / PRHAngleGradientFilter.h

Created June 1, 2013 21:48

Core Image custom filter to generate an angular gradient. The center is at the origin (0,0). You may want to use CIAffineTransform and/or CICrop on the output.

	//
	// PRHAngleGradientFilter.h
	//
	// Created by Peter Hosey on 2013-01-30.
	// Copyright (c) 2013 Peter Hosey. All rights reserved.
	//

	#import <QuartzCore/QuartzCore.h>

	@interface PRHAngleGradientFilter : CIFilter

boredzo / wwdc2013index-redacted.txt

Last active December 18, 2015 12:59

Script to rename WWDC videos and slides PDFs to include the session title in the name. Also included: A list of the session numbers and (redacted where necessary) titles, in TSV format, for use with this script.

	100 Keynote
	101 Platforms State of the Union
	102 Apple Design Awards
	109 Painting the Future
	200 Accessibility in OS X
	201 Building User Interfaces for iOS 7
	202 Accessibility in iOS
	203 What’s New in Cocoa Touch
	204 What’s New with Multitasking
	205 What’s New in Cocoa

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