acrookston

iOS Interview Questions

Sources include, but not limited to:

• https://izeeshan.wordpress.com/2015/03/31/interview-stuff/
• https://github.com/9magnets/iOS-Developer-and-Designer-Interview-Questions
• https://www.quora.com/What-do-startups-look-for-in-a-candidate-during-an-iOS-technical-interview-What-do-they-want-to-hear
• https://www.linkedin.com/pulse/ios-interview-questions-senior-developers-alex-bush
• https://www.raywenderlich.com/110982/swift-interview-questions-answers

In Swift, what is the difference between a struct and a class?

acrookston

#!/bin/sh
#
# Extended 2015 by Andrew Crookston <andrew@caoos.com> to use pidfiles instead of process names
# Original (c) 2010, Andrew Johnstone andrew @ajohnstone.com
# Based on the 'proc_mem' plugin, written by Rodrigo Sieiro rsieiro @gmail.com
#
# Configure it by using the pidfiles env. Format: name:pidfile name:pidfile. e.g.:
#
# [proc_cpu_pid]
# env.pidfiles munin-node:/var/run/munin/munin-node.pid

acrookston

#!/bin/bash

DEVICES=`adb devices | tail  -n +2 | cut -f1`

for DEVICE in $DEVICES
do
  RUN="adb -s $DEVICE $@"
  echo $RUN
  ${RUN}
done

acrookston

#!/bin/sh
#
# (c) 2015, Andrew Crookston <andrew@caoos.com>
# Licence: GPLv2
#
# Configure it by using the pidfiles env. Format: name:pidfile name:pidfile. e.g.:
#
# [proc_mem_pid]
# env.pidfiles munin-node:/var/run/munin/munin-node.pid
#

acrookston

Automatic build versions from git in Xcode (and other goodies)

Installation procedure for pre-build actions to automatically populate Xcode Info.plist with dynamic data.

1. Xcode Scheme pre-action

Edit Xcode Scheme and add a pre-action script. Copy the contents of preaction.sh into the pre-action script box.

acrookston

extension NSRegularExpression {
    convenience init(substrings: [String], options: NSRegularExpression.Options) throws {
        let escapedSubstrings: [String] = substrings.map(NSRegularExpression.escapedTemplate)
        let pattern: String = escapedSubstrings.joined(separator: "|")
        try self.init(pattern: pattern, options: options)
    }

    convenience init?(with pattern: String, options: NSRegularExpression.Options = []) {
        do {
            try self.init(pattern: pattern, options: options)

acrookston

// The image is originally animated on to the view controller then added to the scroll view.
// So, there might be some animation residue in here.
// Class needs: <UIScrollViewDelegate>

func viewDidLoad() {
    let width = UIScreen.mainScreen().bounds.size.width
    let aspect: CGFloat = width / shotWidth

    var frame = CGRectMake(0, 0, shotWidth * aspect, shotHeight * aspect)
    self.scrollView = UIScrollView(frame: frame)

acrookston

\

acrookston

/// ContentLoader is a lightweight state manager for loading and displaying content and/or errors.
/// It allows you to repeatedly make requests and display new content or cached content in the event of an error.
/// Commonly known as RemoteData or LCE (Loading / Content / Error).
/// Inspired by https://tech.instacart.com/lce-modeling-data-loading-in-rxjava-b798ac98d80
///
final class ContentLoader<T> {
    init() { }

    @discardableResult func loader(_ loader: (() -> Void)?) -> ContentLoader<T> {
        self.loader = loader

acrookston

# Thanks to: https://medium.com/doraoutloud/migrating-your-apple-notes-to-evernote-12114418ba00
# Open "Script Editor" application, paste and run.

tell application "Notes"
	
	set theMessages to every note
	
	repeat with thisMessage in theMessages
		
		set myTitle to the name of thisMessage