chrislonge

import Foundation

struct MyModel: Hashable {
    
    let identifier = UUID()
    func hash(into hasher: inout Hasher) {
        hasher.combine(identifier)
    }
    static func == (lhs: MyModel, rhs: MyModel) -> Bool {
        return lhs.identifier == rhs.identifier

chrislonge

Swift Intro

Variables and Constants

Declare a variable with the var keyword.

var str = "Hello, playground" // str is of type string
str = 5 // This is an error, compiler won't let you assign an Int to a type String 

Swift is a type safe language, meaning once a variable is declared as a certain type, it must maintain that type.

If you don’t specify the type of value you need, Swift uses type inference.

chrislonge

import UIKit
import XCPlayground

XCPlaygroundPage.currentPage.needsIndefiniteExecution = true
let containerView = UIView(frame: CGRect(x: 0.0, y: 0.0, width: 375.0, height: 667.0))
containerView.backgroundColor = UIColor.whiteColor()
XCPlaygroundPage.currentPage.liveView = containerView

var aboutTextView = UITextView(frame: CGRect(x: 12.0, y: 20.0, width: containerView.frame.size.width - 12.0, height: 200.0))
aboutTextView.textAlignment = .Left

chrislonge

post_install do |installer|
    installer.pods_project.targets.each do |target|
        puts "#{target}"
        target.build_configurations.each do |config|
            puts "#{config}"
        end
    end
end

chrislonge

for (UIWebView *webView in self.overdraftSection.subviews) {
  webView.layer.borderColor = [[UIColor blackColor] CGColor];
  webView.layer.borderWidth = 2.0f;
}

chrislonge

for family in UIFont.familyNames {
    print(family)
    for name in UIFont.fontNames(forFamilyName: family) {
        print(name)
    }
}