mattstevens

NSImage *computerImage = [NSImage imageNamed:NSImageNameComputer];
NSInteger size = 256;

NSBitmapImageRep *rep = [[NSBitmapImageRep alloc]
                         initWithBitmapDataPlanes:NULL
                         pixelsWide:size
                         pixelsHigh:size
                         bitsPerSample:8
                         samplesPerPixel:4
                         hasAlpha:YES

dergachev

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

steipete

// 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

NSUInteger PSPDFHashFromCGRect(CGRect rect) {
    return (*(NSUInteger *)&rect.origin.x << 10 ^ *(NSUInteger *)&rect.origin.y) + (*(NSUInteger *)&rect.size.width << 10 ^ *(NSUInteger *)&rect.size.height);
}

adaugherity

#!/usr/bin/ruby
# Create display override file to force Mac OS X to use RGB mode for Display
# see http://embdev.net/topic/284710

require 'base64'

data=`ioreg -l -d0 -w 0 -r -c AppleDisplay`

edids=data.scan(/IODisplayEDID.*?<([a-z0-9]+)>/i).flatten
vendorids=data.scan(/DisplayVendorID.*?([0-9]+)/i).flatten

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

---

gamenerds

#import <Foundation/Foundation.h>

// This helps deal with NSPointerArray that stores pointers to objects that inherit from NSObject.
// Not sure if this will work for other pointer types!!
@interface NSPointerArray (Helpers)

/**
 *  Adds pointer to the given object to the array.
 *
 *  @param object Object whose pointer needs to be added to the array. 

hooman

// The correct implementation of `Equatable` (and `Comparable`) can be tricky for class
// hierarchies. To make it easier, it is better to follow a well-defined pattern. Here
// is my suggestion on how to do it:

// 1. Define a protocol for polymorphic test function for equality (or comparison): 
// Note: operators are not polymorphic (not virtual in C++ terms)). The function to 
// call is determined and hard-coded at compile time.

/// A protocol to ammend `Equatable` for use with `class` types.

dornad

- (void)testMethodExpectingNoError
{
  id someObject = [self someMethodThatReturnsAnExpectedObject]; 
  id mockDependencuy = OCMClassMock([DependencyToBeMocked class]);
  OCMStub([mockDependency someMethodWithErrorRef:[OCMArg anyObjectRef]).andReturn(someObject);
  
  NSError * error = nil;
  id someReturnedValue =[self.objectUnderTest someMethodWithErrorRef:&error]:
  
  XCTAssertNotNil(someReturnedValue);

ryanflorence

Turning Off Github Issues

My friend Michael Jackson turned off github issues on one of his smaller projects. It got me thinking...

Maintainers getting burned out is a problem. Not just for the users of a project but the mental health of the maintainer. It's a big deal for both parties. Consumers want great tools, maintainers want to create them, but maintainers don't want to be L1 tech support, that's why they