OliverLetterer

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

So you're curious in learning this new thing called (Functional) Reactive Programming (FRP).

Learning it is hard, even harder by the lack of good material. When I started, I tried looking for tutorials. I found only a handful of practical guides, but they just scratched the surface and never tackled the challenge of building the whole architecture around it. Library documentations often don't help when you're trying to understand some function. I mean, honestly, look at this:

Rx.Observable.prototype.flatMapLatest(selector, [thisArg])

Projects each element of an observable sequence into a new sequence of observable sequences by incorporating the element's index and then transforms an observable sequence of observable sequences into an observable sequence producing values only from the most recent observable sequence.

OliverLetterer

Record a screencast with QuickTime Player

1. Connect an iOS defice with a cable
2. In QuickTime Player: Option-Cmd-N (New Movie Recording) -> Select your device from the recording menu:

Install gifify

OliverLetterer

#ifndef _DCT_WEAK_H
#define _DCT_WEAK_H

// Macros for portable support of notionally weak properties with ARC
// Forked  from https://gist.github.com/1354106
// Updated by Rowan James
// Available at https://gist.github.com/1530868
// Defines:
//	dct_weak		to be used as a replacement for the 'weak' keyword:
//						@property (dct_weak) NSObject* propertyName;

OliverLetterer

// Don't forget to #import <objc/runtime.h>
void A2Swizzle(Class cls, SEL oldSel, SEL newSel, BOOL isClassMethod)
{
	if (isClassMethod) cls = object_getClass(cls);
	
	Method origMethod = class_getInstanceMethod(cls, oldSel);
	Method newMethod = class_getInstanceMethod(cls, newSel);
	
	if (class_addMethod(cls, oldSel, method_getImplementation(newMethod), method_getTypeEncoding(newMethod)))
		class_replaceMethod(cls, newSel, method_getImplementation(origMethod), method_getTypeEncoding(origMethod));

OliverLetterer

//
// Copyright (c) 2012 Cédric Luthi / @0xced. All rights reserved.
//

#if TARGET_IPHONE_SIMULATOR

static NSString * const FakeCarrier = @"AT&T";

#import <objc/runtime.h>

OliverLetterer

//
//  CCamera.h
//  CCamera
//
//  Created by Jonathan Wight on 7/12/12.
//  Copyright (c) 2012 Jonathan Wight. All rights reserved.
//

#import <Foundation/Foundation.h>

OliverLetterer

desc "Create a new version tag and push a new podspec"
task :release do
  require 'cocoapods'
  require 'colored'
  version = Pod::Specification.from_file(Pathname.pwd + 'MyLib.podspec').version
  puts "Releasing version `#{version}'. Is that correct? (y/n)"
  if $stdin.gets.strip.downcase == 'y'
    sh "git tag -a #{version} -m 'Release #{version}'"
    sh "git push --tags"
    sh "pod lint"

OliverLetterer

@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

OliverLetterer

#import <UIKit/UIKit.h>

@interface UIView (SMFrameAdditions)

@property (nonatomic, assign) CGPoint $origin;
@property (nonatomic, assign) CGSize $size;
@property (nonatomic, assign) CGFloat $x, $y, $width, $height; // normal rect properties
@property (nonatomic, assign) CGFloat $left, $top, $right, $bottom; // these will stretch the rect

@end

OliverLetterer

//  Created by Nick Snyder on 11/13/12.
//  NDCollectionViewFlowLayout.h
@interface NDCollectionViewFlowLayout : UICollectionViewFlowLayout

@end