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@beccadax
beccadax / WideningOperatorExamples.swift
Created August 29, 2014 07:32
Adds a prefix ^ operator which allows widening conversions between numeric types.
let i8 = Int8(42)
let i16 = Int16(42)
let i32 = Int32(42)
let i64 = Int64(42)
^i8 + i16
let f = Float(42.0)
let cgf = CGFloat(42.0)
let d = Double(42.0)
@jspahrsummers
jspahrsummers / GHRunLoopWatchdog.h
Created January 28, 2015 20:50
A class for logging excessive blocking on the main thread
/// Observes a run loop to detect any stalling or blocking that occurs.
///
/// This class is thread-safe.
@interface GHRunLoopWatchdog : NSObject
/// Initializes the receiver to watch the specified run loop, using a default
/// stalling threshold.
- (id)initWithRunLoop:(CFRunLoopRef)runLoop;
/// Initializes the receiver to detect when the specified run loop blocks for
@chriscdn
chriscdn / CLLocation+rhextensions.h
Last active August 17, 2018 07:23
A CLLocation category for determing the time zone from a location.
//
// CLLocation+rhextensions.h
//
// Copyright (C) 2015 by Christopher Meyer
// http://schwiiz.org/
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
@steipete
steipete / UIPopoverPresentationController+PSPDFAdditions.m
Last active June 27, 2016 18:20
If you're annoyed about the incorrect arrow presentation on popovers (https://twitter.com/steipete/status/624521051855319040) use this category. Oh, and file a radar! I did.
@implementation UIPopoverPresentationController (PSPDFAdditions)
+ (void)load {
PSPDFSwizzleMethodImplementation(self, @selector(containerViewWillLayoutSubviews), ^(UIPopoverPresentationController *_self) {
// Refresh bar button view internals
[_self pspdf_updateBarButtonView];
((void( *)(id, SEL))objc_msgSend)(_self, PSPDFPrefixedSelector(containerViewWillLayoutSubviews));
});
}
@nickfrey
nickfrey / WFSimulate3DTouchPreview.m
Created September 22, 2015 20:13
Test 3D Touch peek/pop using private APIs
@interface UIPreviewForceInteractionProgress : NSObject
- (void)endInteraction:(BOOL)arg1;
@end
@interface UIPreviewInteractionController : NSObject
@property (nonatomic, readonly) UIPreviewForceInteractionProgress *interactionProgressForPresentation;
@jverkoey
jverkoey / Dictionary+GetWithDefault.swift
Last active November 5, 2015 09:11
Swift Dictionary get-with-default extension
import Foundation
extension Dictionary {
/**
Returns the value for the given key if it exists, otherwise stores and returns the result of
withDefault.
Example usage:
var dictionary: [String:[String]] = [:]
@travisnewby
travisnewby / CMDeviceMotion.swift
Last active March 10, 2025 01:56
Determine the direction of "gaze" of the device in any orientation
extension CMDeviceMotion {
func gaze(atOrientation orientation: UIInterfaceOrientation) -> SCNVector4 {
let attitude = self.attitude.quaternion
let aq = GLKQuaternionMake(Float(attitude.x), Float(attitude.y), Float(attitude.z), Float(attitude.w))
let final: SCNVector4
switch orientation {
@0xced
0xced / Emoji-iOS-10.0-14A5322e.json
Created August 8, 2016 22:38
Emoji from iOS beta 4 (14A5322e)
{
"People" : [
{
"Symbol" : "😀",
"Name" : "GRINNING FACE"
},
{
"Symbol" : "😬",
"Name" : "GRIMACING FACE"
},
@frankrausch
frankrausch / String+Hyphenation.swift
Last active June 15, 2023 16:45
Returns a String with soft hyphens (U+00AD)
import Foundation
extension String {
func hyphenated(languageCode: String) -> String {
let locale = Locale(identifier: languageCode)
return self.hyphenated(locale: locale)
}
func hyphenated(locale: Locale) -> String {
As of iOS 11/macOS High Sierra, and only including ones in Foundation and CoreFoundation
Strings:
_NSCFString - a CFStringRef or CFMutableStringRef. This is the most common type of string object currently.
- May have 8 bit (ASCII) or 16 bit (UTF-16) backing store
_NSCFConstantString - a compile time constant CFStringRef, like you'd get with @"foo"
- May also be generated by dynamic string creation if matches a string in a pre-baked table of common strings called the StringROM
NSBigMutableString - an NSString backed by a CFStorage (https://github.com/opensource-apple/CF/blob/master/CFStorage.h) for faster handling of very large strings
NSCheapMutableString - a very limited NSMutableString that allows for zero-copy initialization. Used in NSFileManager for temporarily wrapping stack buffers.