Skip to content

Instantly share code, notes, and snippets.

View DanielKrofchick's full-sized avatar

Daniel Krofchick DanielKrofchick

View GitHub Profile
@zoul
zoul / DownloadOperation.h
Created September 14, 2010 06:36
Asynchronous NSURLConnection in concurrent NSOperation
@interface DownloadOperation : NSOperation
{
NSURLRequest *request;
NSURLConnection *connection;
NSMutableData *receivedData;
}
@property(readonly) BOOL isExecuting;
@property(readonly) BOOL isFinished;
@sfider
sfider / LOOProfiling.h
Created July 8, 2012 18:16
Objective-C macro for measuring execution time of block of code.
//
// LOOProfiling.h
//
// Created by Marcin Swiderski on 4/12/12.
// Copyright (c) 2012 Marcin Swiderski. All rights reserved.
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
@Tricertops
Tricertops / gist:5483361
Created April 29, 2013 17:49
Helper functions to round screen coordinates and dimensions to screen scale.
CGFloat CGFloatAdjustToScreenScale(CGFloat value, NSRoundingMode mode) {
CGFloat (*roundingFunction)(CGFloat);
switch (mode) {
case NSRoundPlain: roundingFunction = &roundf; break;
case NSRoundUp: roundingFunction = &ceilf; break;
case NSRoundDown: roundingFunction = &floorf; break;
case NSRoundBankers:roundingFunction = &roundf; break;
}
CGFloat scale = [[UIScreen mainScreen] scale];
CGFloat result = roundingFunction(value * scale) / scale;
@iwasrobbed
iwasrobbed / gist:5528897
Last active June 5, 2020 20:34
UICollectionView w/ NSFetchedResultsController & NSBlockOperation. Idea originated from Blake Watters (https://github.com/AshFurrow/UICollectionView-NSFetchedResultsController/issues/13)
- (void)controllerWillChangeContent:(NSFetchedResultsController *)controller
{
self.shouldReloadCollectionView = NO;
self.blockOperation = [[NSBlockOperation alloc] init];
}
- (void)controller:(NSFetchedResultsController *)controller didChangeSection:(id<NSFetchedResultsSectionInfo>)sectionInfo
atIndex:(NSUInteger)sectionIndex forChangeType:(NSFetchedResultsChangeType)type
{
__weak UICollectionView *collectionView = self.collectionView;
@steipete
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>
@steipete
steipete / PSPDFThreadSafeMutableDictionary.m
Last active January 20, 2025 07:33
Simple implementation of a thread safe mutable dictionary. In most cases, you want NSCache instead, but it can be useful in situations where you want to manually control what is evicted from the cache in low memory situations.**Warning:** I only use this for setting/getting keys. Enumeration is not thread safe here and will still throw exception…
//
// PSPDFThreadSafeMutableDictionary.m
//
// Copyright (c) 2013 Peter Steinberger, PSPDFKit GmbH. All rights reserved.
//
// 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
// copies of the Software, and to permit persons to whom the Software is
@gruber
gruber / Liberal Regex Pattern for Web URLs
Last active April 22, 2025 16:56
Liberal, Accurate Regex Pattern for Matching Web URLs
The regex patterns in this gist are intended only to match web URLs -- http,
https, and naked domains like "example.com". For a pattern that attempts to
match all URLs, regardless of protocol, see: https://gist.github.com/gruber/249502
# Single-line version:
(?i)\b((?:https?:(?:/{1,3}|[a-z0-9%])|[a-z0-9.\-]+[.](?:com|net|org|edu|gov|mil|aero|asia|biz|cat|coop|info|int|jobs|mobi|museum|name|post|pro|tel|travel|xxx|ac|ad|ae|af|ag|ai|al|am|an|ao|aq|ar|as|at|au|aw|ax|az|ba|bb|bd|be|bf|bg|bh|bi|bj|bm|bn|bo|br|bs|bt|bv|bw|by|bz|ca|cc|cd|cf|cg|ch|ci|ck|cl|cm|cn|co|cr|cs|cu|cv|cx|cy|cz|dd|de|dj|dk|dm|do|dz|ec|ee|eg|eh|er|es|et|eu|fi|fj|fk|fm|fo|fr|ga|gb|gd|ge|gf|gg|gh|gi|gl|gm|gn|gp|gq|gr|gs|gt|gu|gw|gy|hk|hm|hn|hr|ht|hu|id|ie|il|im|in|io|iq|ir|is|it|je|jm|jo|jp|ke|kg|kh|ki|km|kn|kp|kr|kw|ky|kz|la|lb|lc|li|lk|lr|ls|lt|lu|lv|ly|ma|mc|md|me|mg|mh|mk|ml|mm|mn|mo|mp|mq|mr|ms|mt|mu|mv|mw|mx|my|mz|na|nc|ne|nf|ng|ni|nl|no|np|nr|nu|nz|om|pa|pe|pf|pg|ph|pk|pl|pm|pn|pr|ps|pt|pw|py|qa|re|ro|rs|ru|rw|sa|sb|sc|sd|se|sg|sh|si|s
@octocat
octocat / .gitignore
Created February 27, 2014 19:38
Some common .gitignore configurations
# Compiled source #
###################
*.com
*.class
*.dll
*.exe
*.o
*.so
# Packages #
@JeanMeche
JeanMeche / gist:50102a47937e9896e4f4
Created April 19, 2015 16:47
Levenshtein — swift
/**
* Levenshtein edit distance calculator
* Usage: levenstein <string> <string>
*
* Inspired by https://gist.github.com/bgreenlee/52d93a1d8fa1b8c1f38b
* Improved with http://stackoverflow.com/questions/26990394/slow-swift-arrays-and-strings-performance
*/
class Tools {
@clementgenzmer
clementgenzmer / FBAnimationPerformanceTracker.h
Last active November 13, 2024 05:38
FBAnimationPerformanceTracker
/*
* This is an example provided by Facebook are for non-commercial testing and
* evaluation purposes only.
*
* Facebook reserves all rights not expressly granted.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON INFRINGEMENT. IN NO EVENT SHALL
* FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN