powhu

//
//  GIF2MP4.swift
//
//  Created by PowHu Yang on 2020/4/24.
//  Copyright © 2020 PowHu Yang. All rights reserved.
//

/* How to use
 let data = try! Data(contentsOf: Bundle.main.url(forResource: "gif", withExtension: "gif")!)
 let tempUrl = URL(fileURLWithPath: NSTemporaryDirectory()).appendingPathComponent("temp.mp4")

andymatuschak

A composable pattern for pure state machines with effects

State machines are everywhere in interactive systems, but they're rarely defined clearly and explicitly. Given some big blob of code including implicit state machines, which transitions are possible and under what conditions? What effects take place on what transitions?

There are existing design patterns for state machines, but all the patterns I've seen complect side effects with the structure of the state machine itself. Instances of these patterns are difficult to test without mocking, and they end up with more dependencies. Worse, the classic patterns compose poorly: hierarchical state machines are typically not straightforward extensions. The functional programming world has solutions, but they don't transpose neatly enough to be broadly usable in mainstream languages.

Here I present a composable pattern for pure state machiness with effects,

akras14

Git Cheat Sheet

Commands

Getting Started

git init

or

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

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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.

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stuartjmoore

//
//  WPTextAttachment.h
//  ReadArticle
//
//  Created by Moore, Stuart on 12/27/13.
//  Copyright (c) 2013 The Washington Post. All rights reserved.
//

#import <UIKit/UIKit.h>

emiller

#!/bin/bash
#
# git-mv-with-history -- move/rename file or folder, with history.
#
# Moving a file in git doesn't track history, so the purpose of this
# utility is best explained from the kernel wiki:
#
#   Git has a rename command git mv, but that is just for convenience.
#   The effect is indistinguishable from removing the file and adding another
#   with different name and the same content.