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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:

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Moving to ES6 from CoffeeScript

I fell in love with CoffeeScript a couple of years ago. Javascript has always seemed something of an interesting curiosity to me and I was happy to see the meteoric rise of Node.js, but coming from a background of Python I really preferred a cleaner syntax.

In any fast moving community it is inevitable that things will change, and so today we see a big shift toward ES6, the new version of Javascript. It incorporates a handful of the nicer features from CoffeeScript and is usable today through tools like Babel. Here are some of my thoughts and issues on moving away from CoffeeScript in favor of ES6.

While reading I suggest keeping open a tab to Babel's learning ES6 page. The examples there are great.

Punctuation

Holy punctuation, Batman! Say goodbye to your whitespace and hello to parenthesis, curly braces, and semicolons again. Even with the advanced ES6 syntax you'll find yourself writing a lot more punctuatio

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{
	"emojis": [
		{"emoji": "👩‍👩‍👧‍👧", "name": "family_mothers_two_girls", "shortname": "", "unicode": "", "html": "👩‍👩‍👧‍👧", "category": "p", "order": ""},
		{"emoji": "👩‍👩‍👧‍👦", "name": "family_mothers_children", "shortname": "", "unicode": "", "html": "👩‍👩‍👧‍👦", "category": "p", "order": ""},
		{"emoji": "👩‍👩‍👦‍👦", "name": "family_mothers_two_boys", "shortname": "", "unicode": "", "html": "👩‍👩‍👦‍👦", "category": "p", "order": ""},
		{"emoji": "👨‍👩‍👧‍👧", "name": "family_two_girls", "shortname": "", "unicode": "", "html": "👨‍👩‍👧‍👧", "category": "p", "order": ""},
		{"emoji": "👨‍👩‍👧‍👦", "name": "family_children", "shortname": "", "unicode": "", "html": "👨‍👩‍👧‍👦", "category": "p", "order": ""},
		{"emoji": "👨‍👩‍👦‍👦", "name": "family_two_biys", "shortname": "", "unicode": "", "html": "👨&zw

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//
//  ContentView.swift
//  AnimationTimingCurve
//
//  Created by Chris Eidhof on 25.09.19.
//  Copyright © 2019 Chris Eidhof. All rights reserved.
//

import SwiftUI

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import SwiftUI
import PlaygroundSupport

struct Desktop: View {
    var body: some View {
        ZStack {
//              Image(uiImage: #imageLiteral(resourceName: "IMG_6281.JPG"))
            Color(UIColor.systemBlue)
            macOS()
        }

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import SwiftUI
import SafariServices
import PlaygroundSupport

// lil news api
let apiURL = "https://api.lil.software/news"

struct News: Codable {
    var articles: [Article]
}

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import SwiftUI
import PlaygroundSupport

// NOTE: this example currently only works with US-based coordinates

// constants

// New York
let latitude = 40.709335
let longitude = -73.956558

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import SwiftUI
import PlaygroundSupport

// constants
let deviceWidth: CGFloat = 320
let deviceHeight: CGFloat = 568
let hasFaceID = true // false for TouchID

struct Device: View {
    var body: some View {

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import SwiftUI
import PlaygroundSupport

// constants
let cardWidth: CGFloat = 343
let cardHeight: CGFloat = 212
let spacing = 36
let animation = Animation.spring()
let cardColors = [
    Color(UIColor.systemRed),

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//
//  TipsView.swift
//  Stonks
//
//  Created by Paul Stamatiou on 7/3/20.
//

import SwiftUI
import PlaygroundSupport