JeOam

Author: https://www.cyanhall.com/

1. The Layer Tree

Core Animation's original name is Layer Kit

Core Animation is a compositing engine; its job is to compose different pieces of visual content on the screen, and to do so as fast as possible. The content in question is divided into individual layers stored in a hierarchy known as the layer tree. This tree forms the underpinning for all of UIKit, and for everything that you see on the screen in an iOS application.

In UIView, tasks such as rendering, layout and animation are all managed by a Core Animation class called CALayer. The only major feature of UIView that isn’t handled by CALayer is user interaction.

There are four hierarchies, each performing a different role:

kristopherjohnson

import Foundation

extension NSData {

    /// Return hexadecimal string representation of NSData bytes
    @objc(kdj_hexadecimalString)
    public var hexadecimalString: NSString {
        var bytes = [UInt8](count: length, repeatedValue: 0)
        getBytes(&bytes, length: length)

HoraceBury

-- io operations

local json = require("json")
local lfs = require( "lfs" )

local iolib = {}

--[[ FACILITIES ]]--

local function toDate( timestamp )

FGRibreau

-- table.filter({"a", "b", "c", "d"}, function(o, k, i) return o >= "c" end)  --> {"c","d"}
--
-- @FGRibreau - Francois-Guillaume Ribreau
-- @Redsmin - A full-feature client for Redis http://redsmin.com
table.filter = function(t, filterIter)
  local out = {}

  for k, v in pairs(t) do
    if filterIter(v, k, t) then out[k] = v end
  end

jacobbubu

mr	Marathi
bs	Bosnian
ee_TG	Ewe (Togo)
ms	Malay
kam_KE	Kamba (Kenya)
mt	Maltese
ha	Hausa
es_HN	Spanish (Honduras)
ml_IN	Malayalam (India)
ro_MD	Romanian (Moldova)