timvisee

Falsehoods programmers believe about time

This is a compiled list of falsehoods programmers tend to believe about working with time.

Don't re-invent a date time library yourself. If you think you understand everything about time, you're probably doing it wrong.

Falsehoods

• There are always 24 hours in a day.
• February is always 28 days long.
• Any 24-hour period will always begin and end in the same day (or week, or month).

0xmachos

Keychain API

kSecAttrAccessible Mapping

Protection Domain (pdmn)	Keychain Accessibility Values
ck	kSecAttrAccessibleAfterFirstUnlock
cku	kSecAttrAccessibleAfterFirstUnlockThisDeviceOnly
dk	kSecAttrAccessibleAlways
akpu	kSecAttrAccessibleWhenPasscodeSetThisDeviceOnly

AliSoftware

import UIKit
import PlaygroundSupport

// Create a view to display the result in playground
let view = UIView(frame: CGRect(x: 0, y: 0, width: 500, height: 500))
view.backgroundColor = .white
PlaygroundPage.current.liveView = view;