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@nicklockwood
nicklockwood / Hacking UIView Animation Blocks.md
Last active Oct 16, 2019
This article was originally written for objc.io issue 12, but didn't make the cut. It was intended to be read in the context of the other articles, so if you aren't familiar with concepts such as CALayer property animations and the role of actionForKey:, read the articles in that issue first.
View Hacking UIView Animation Blocks.md

Hacking UIView animation blocks for fun and profit

In this article, I'm going to explore a way that we can create views that implement custom Core Animation property animations in a natural way.

As we know, layers in iOS come in two flavours: Backing layers and hosted layers. The only difference between them is that the view acts as the layer delegate for its backing layer, but not for any hosted sublayers.

In order to implement the UIView transactional animation blocks, UIView disables all animations by default and then re-enables them individually as required. It does this using the actionForLayer:forKey: method.

Somewhat strangely, UIView doesn't enable animations for every property that CALayer does by default. A notable example is the layer.contents property, which is animatable by default for a hosted layer, but cannot be animated using a UIView animation block.

@mackuba
mackuba / wwdc15.md
Last active Sep 17, 2019
New stuff from WWDC 2015
View wwdc15.md

Here's my own list of the interesting stuff announced during this year's WWDC, collected from the keynotes, various Apple docs, blog posts and tweets.

If you're planning to watch the videos, I really recommend this Mac app that helps you download and watch them: https://github.com/insidegui/WWDC.

OS X El Capitan

http://www.apple.com/osx/elcapitan-preview/

  • split view - two apps side by side on full screen
@raven
raven / Breakpoints_v2.xcbkptlist
Last active Aug 30, 2019
Symbolic breakpoint for dynamically linking libReveal against UIApplicationMain
View Breakpoints_v2.xcbkptlist
<?xml version="1.0" encoding="UTF-8"?>
<Bucket
type = "2"
version = "2.0">
<Breakpoints>
<BreakpointProxy
BreakpointExtensionID = "Xcode.Breakpoint.SymbolicBreakpoint">
<BreakpointContent
shouldBeEnabled = "Yes"
ignoreCount = "0"
@davimacedo
davimacedo / curl.sh
Created Apr 25, 2016
Example of importing data with cloud functions
View curl.sh
curl -X POST \
-H "X-Parse-Application-Id: LL9oIdzIkmwl5xyowQQu0fTmXyUWfet9RuAzwHfj" \
-H "X-Parse-REST-API-Key: R3S8PYQKuzeV4c8MUeO5ved46C50MEp56boDHW1O" \
-H "Content-Type: application/json" \
-d @data.json \
https://parseapi.back4app.com/functions/import
@henrik
henrik / dokku_on_digital_ocean.md
Last active Jul 30, 2019
Notes from running Dokku on Digital Ocean.
View dokku_on_digital_ocean.md

My notes for Dokku on Digital Ocean.

These may be a bit outdated: Since I originally wrote them, I've reinstalled on a newer Dokku and may not have updated every section below.

Commands

Install dokku-cli (gem install dokku-cli) for a more Heroku-like CLI experience (dokku config:set FOO=bar).

# List/run commands when not on Dokku server (assuming a "henroku" ~/.ssh/config alias)
ssh henroku dokku
View Simple Scrolling UIStackView
//
// SimpleScrollingStack.swift
// A super-simple demo of a scrolling UIStackView in iOS 9
//
// Created by Paul Hudson on 10/06/2015.
// Learn Swift at www.hackingwithswift.com
// @twostraws
//
import UIKit
View UIView+Snapshots.swift
import UIKit
// Snapshot utilities
extension UIView {
func snapshotView(view: UIView, afterUpdates: Bool) -> UIView {
let snapshot = view.snapshotViewAfterScreenUpdates(afterUpdates)
self.addSubview(snapshot)
snapshot.frame = convertRect(view.bounds, fromView: view)
return snapshot
View Withable.swift
/// Withable is a simple protocol to make constructing
/// and modifying objects with multiple properties
/// more pleasant (functional, chainable, point-free)
public protocol Withable {
init()
}
public extension Withable {
/// Construct a new instance, setting an arbitrary subset of properties
init(with config: (inout Self) -> Void) {
@bomberstudios
bomberstudios / sketch-plugins.md
Last active Feb 13, 2019
A list of Sketch plugins hosted at GitHub, in no particular order.
View sketch-plugins.md
@jpsim
jpsim / MyTableViewController.m
Created Aug 19, 2014
Grouped UITableView using Realm
View MyTableViewController.m
////////////////////////////////////////////////////////////////////////////
//
// Copyright 2014 Realm Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
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