onmyway133

Videos

• Introduction to Functional Programming Johannes Weiß - http://kcy.me/1ngiv
• ReactiveCocoa at MobiDevDay Andrew Sardone - http://kcy.me/1nhl3
• The Future Of ReactiveCocoa Justin Spahr-Summers - http://kcy.me/1nhs7
• Enemy of the State Justin Spahr-Summers - http://kcy.me/1njzs
• WWDC 2014 Session 229 - Advanced iOS Application Architecture and Patterns Andy Matuschak - http://kcy.me/1pyva
• Functioning as a Functionalist Andy Matuschak - http://kcy.me/22o45
• Controlling Complexity in Swift Andy Matuschak - http://kcy.me/23sc9
• Functional and reactive programming with Swift Ash Furrow -

onmyway133

###Let's install Vagrant###

• Install VirtualBox: https://www.virtualbox.org/
• Install Vagrant: http://vagrantup.com/

###Select a Vagrant Box from https://vagrantcloud.com###

#add it to your list of boxes
vagrant box add hashicorp/precise32
#create a new folder for your project & init vagrant

onmyway133

iOS 9 App Transport Security

Starting from iOS 9, App Transport Security enforces to use secure HTTPS requests by default.

App Transport Security

App Transport Security (ATS) enforces best practices in the secure connections between an app and its back end. ATS prevents accidental disclosure, provides secure default behavior, and is easy to adopt; it is also on by default in iOS 9 and OS X v10.11. You should adopt ATS as soon as possible, regardless of whether you’re creating a new app or updating an existing one.

If you’re developing a new app, you should use HTTPS exclusively. If you have an existing app, you

onmyway133

// Monad
operator infix >>= {
    precedence 10
    associativity left
}

struct _MReturn {
}
@transparent func _mreturn<Args>(a: Args) -> (_MReturn, Args) {
    return (_MReturn(), a)

onmyway133

import Foundation

struct Box<T> {}

protocol Functor {
    typealias A
    typealias B
    typealias Boxed = Box<B>
    
    func fmap<B>(f: A -> B) -> Boxed

onmyway133

Copy and paste the swift code below into a playground to experiment.

This is a very close emulation of Functor and Monad typeclasses in swift. As of Swift 1.2 and Xcode 6.3, this is no longer very fragile.

Unfortunately, the compiler cannot verify the types when passing a function to (>>=). We have to wrap the function in a closure and call it with an explicit argument to compile.

optionalDoubles >>= squareRoot // doesn't compile
optionalDoubles >>= { squareRoot($0) } // compiles

onmyway133

extension NSHashTable: SequenceType {
  
  public func generate() -> AnyGenerator<AnyObject> {
    
    var array = self.allObjects
    var nextIndex = array.count-1
    
    return anyGenerator {
      if (nextIndex < 0) {
        return nil

onmyway133

import Cocoa

enum CoroutineState {
    case Fresh, Running, Blocked, Canceled, Done
}

struct CoroutineCancellation: ErrorType {}

class CoroutineImpl<InputType, YieldType> {
    let body: (yield: YieldType throws -> InputType) throws -> Void

onmyway133

[db makeFunctionNamed:@"UTTypeConformsTo" maximumArguments:2 withBlock:^(sqlite3_context *context, int argc, sqlite3_value **argv) {
    if (sqlite3_value_type(argv[0]) == SQLITE_TEXT) {
        
        const unsigned char *a = sqlite3_value_text(argv[0]);
        const unsigned char *b = sqlite3_value_text(argv[1]);
        
        CFStringRef as = CFStringCreateWithCString(nil, (const char*)a, kCFStringEncodingUTF8);
        CFStringRef bs = CFStringCreateWithCString(nil, (const char*)b, kCFStringEncodingUTF8);
        
        sqlite3_result_int(context, UTTypeConformsTo(as, bs));

onmyway133

import Foundation

// Generic Error
public struct Error: ErrorType {let reason: String}

/**
 Printing version of try? Call either with standard or autoclosure approach
 ```
 let contents = attempt{try NSFileManager.defaultManager().contentsOfDirectoryAtPath(fakePath)}
 let contents = attempt{try NSFileManager.defaultManager().contentsOfDirectoryAtPath(XCPlaygroundSharedDataDirectoryURL.path!)}