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@praeclarum
praeclarum / ArrayDiff.swift
Last active January 8, 2021 06:10
A generic diffing operation that can calculate the minimal steps needed to convert one array to another. It can be used to generate standard diffs, or it can be used more creatively to calculate minimal UI updates.
//
// ArrayDiff.swift
//
// Created by Frank A. Krueger on 6/30/15.
// Copyright © 2015 Krueger Systems, Inc. All rights reserved.
// License: MIT http://opensource.org/licenses/MIT
//
import Foundation
@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
@steipete
steipete / UITableViewMore.m
Last active January 29, 2018 14:19
Using the "More" button. Of course the simple way that Apple uses in Mail/iOS is not public. rdar://16600859
- (NSString *)tableView:(UITableView *)tableView titleForSwipeAccessoryButtonForRowAtIndexPath:(NSIndexPath *)indexPath {
return @"More";
}
- (void)tableView:(UITableView *)tableView swipeAccessoryButtonPushedForRowAtIndexPath:(NSIndexPath *)indexPath {
NSLog(@"I wanted to be a pretty public API, but then time ran out and they forgot me...");
// Hide the More/Delete menu.
[self setEditing:NO animated:YES];
}
@mattt
mattt / NSRange-Conventional.h
Last active January 22, 2020 23:32
Re-declaration of existing `NSRange` functions and implementation of new functions to match conventions of comparable Foundation and Core Foundation types.
NS_INLINE NSRange NSRangeMake(NSUInteger loc, NSUInteger len) {
return NSMakeRange(loc, len);
}
NS_INLINE NSUInteger NSRangeMax(NSRange range) {
return NSMaxRange(range);
}
NS_INLINE BOOL NSRangeContainsLocation(NSUInteger loc, NSRange range) {
return NSLocationInRange(loc, range);
@mattt
mattt / uiappearance-selector.md
Last active December 2, 2025 01:55
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' | \