JohnSundell

/**
 *  Perform a throwing expression, and throw a custom error in case the expression threw
 *
 *  - parameter expression: The expression to execute
 *  - parameter error: The custom error to throw instead of the expression's error
 *  - throws: The given error
 *  - returns: The return value of the given expression
 */
func perform<T>(_ expression: @autoclosure () throws -> T, orThrow errorExpression: @autoclosure () -> Error) throws -> T {
    do {

kumabook

import Foundation

public protocol Observer: Equatable {
    associatedtype EventType
    func listen(_ event: EventType)
}

public protocol Observable {
    associatedtype ObserverType: Observer
    associatedtype EventType

capttaco

import CoreData

protocol Fetchable
{
    typealias FetchableType: NSManagedObject
    
    static func entityName() -> String
    static func objectsInContext(context: NSManagedObjectContext, predicate: NSPredicate?, sortedBy: String?, ascending: Bool) throws -> [FetchableType]
    static func singleObjectInContext(context: NSManagedObjectContext, predicate: NSPredicate?, sortedBy: String?, ascending: Bool) throws -> FetchableType?
    static func objectCountInContext(context: NSManagedObjectContext, predicate: NSPredicate?) -> Int

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.

---

irachex

import random

class TreapNode(object):
    def __init__(self, key, data):
        self.key = key
        self.ran = random.random()
        self.size = 1
        self.cnt = 1
        self.data = data
        self.left = None

shripadk

How to setup Heroku Hostname SSL with GoDaddy SSL Certificate and Zerigo DNS
Heroku recently added an exciting new 'Hostname SSL' option.  This option offers the broad compatibility of IP-based SSL, but at 1/5 the price ($20 / month at the time of this writing).  
 
The following tutorial explains how to use Heroku's new 'Hostname SSL' option on your Heroku project.  Before we begin, let's list what we're using here:

    * Heroku Hostname SSL
    * GoDaddy Standard SSL Certificate
    * Zerigo DNS