amlcurran

This is some text downloaded from an API! 

amlcurran

func doStuff() {
  keyInput.constrain(toSuperviewSafeArea: .top, .leading, insetBy: 16)
  blurView.contentView.addSubview(valueInput)
  valueInput.constrain(toSuperviewSafeArea: .trailing, .bottom, insetBy: 16)
  verticalLayoutConstraint = keyInput.constrain(.bottom, to: valueInput, .top, withOffset: -8)
  verticalLayoutConstraint.priority = .defaultHigh
  verticalLayoutConstraint.isActive = false

  sameWidthConstraint = keyInput.constrain(.width, to: valueInput, .width)
  sameTopConstraint = keyInput.constrain(.top, to: valueInput, .top)

amlcurran

import UIKit

extension UIView {

    func constrain(toSuperview edges: NSLayoutAttribute..., insetBy inset: CGFloat = 0) {
        for edge in edges {
            constrain(toSuperview: edge, withOffset: offset(for: edge, ofInset: inset))
        }
    }

amlcurran

func displayErrorMessage(_ optionalMessage: String?) {
   if let message = optionalMessage {
      print(message) 
   }
}

displayErrorMessage("Something went wrong") // Prints out "Something went wrong"
displayErrorMessage(nil) // doesn't do anything

amlcurran

#!/bin/bash

if hash lines 2>/dev/null ; then
    if [ -f imports.txt -o -f lines.txt ]; then
        echo "Previous import.txt and/or lines.txt exist! Delete them first."
        exit
    fi

    imports > imports.txt && lines > lines.txt
    open imports.txt lines.txt

amlcurran

func completion<Result>(onResult: @escaping (Result) -> Void, onError: @escaping (Error) -> Void) -> ((Result?, Error?) -> Void) {
    return { (maybeResult, maybeError) in
        if let result = maybeResult {
            onResult(result)
        } else if let error = maybeError {
            onError(error)
        } else {
            onError(SplitError.NoResultFound)
        }
    }

amlcurran

{
  "fruits" : [
    {
      "name" : "Apple",
      "image" : "https://upload.wikimedia.org/wikipedia/commons/thumb/1/15/Red_Apple.jpg/265px-Red_Apple.jpg",
      "price" : 35
    },
    {
      "name" : "Banana",
      "image" : "https://upload.wikimedia.org/wikipedia/commons/thumb/4/44/Bananas_white_background_DS.jpg/320px-Bananas_white_background_DS.jpg",

amlcurran

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    if recipes[indexPath.row].isPromoted {
      let promotedCell = tableView.dequeueReusableCell(withIdentifier: "promoted", for: indexPath) as! PromotedRecipeCell
      promotedCell.recipe = recipe
      promotedCell.promotion = recipe.promotion // we've guarded here using the isPromoted method, so the value is unwrapped
      return promotedCell
    } else {
      let normalCell = tableView.dequeueReusableCell(withIdentifier: "normal", for: indexPath) as! RecipeCell
      normalCell.recipe = recipe
      return normalCell

amlcurran

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    if let promotion = recipes[indexPath.row].promotion {
      let promotedCell = tableView.dequeueReusableCell(withIdentifier: "promoted", for: indexPath) as! PromotedRecipeCell
      promotedCell.recipe = recipe
      promotedCell.promotion = promotion
      return promotedCell
    } else {
      let normalCell = tableView.dequeueReusableCell(withIdentifier: "normal", for: indexPath) as! RecipeCell
      normalCell.recipe = recipe
      return normalCell

amlcurran

extension Optional {
    
    func or(_ backup: Wrapped) -> Wrapped {
        if let wrapped = self {
            return wrapped
        }
        return backup
    }
    
}