Code Completion

By Code CompletionTechnology Education

Code Completion episodes

August 10, 202141: Humans are Weird
Welcome to Code Completion, Episode 41! We are a group of iOS developers and educators hoping to share what we love most about development, Apple technology, and completing your code!
Follow us @CodeCompletion on Twitter to hear about our upcoming livestreams, videos, and other content.
Today, we discuss:
Code Completion Club: https://codecompletion.io/jointheclub
Indie App Spotlight, with a new app for you to check out:
ToothFairy by Michael Tsai (@mjtsai): https://c-command.com/toothfairy/
Fernando:
Self Control: https://selfcontrolapp.com/
YouTube premium
Fernando’s Chess Clock: https://www.amazon.com/ajedrez-digital-temporizador-profesional-funci%C3%B3n/dp/B07M5RP9SC/ref=sr_1_4_sspa
Seven Link: https://apps.apple.com/us/app/seven-7-minute-hiit-workout/id650276551
Paul:
Getting Sleep
Are you stuck?
Exercise
Analog: https://ugmonk.com/blogs/journal/analog-the-simplest-productivity-system
Journal: https://jamesclear.com/habit-journal
SuperEasyTimer: https://apps.apple.com/us/app/super-easy-timer/id1353137878?mt=12
MultiMarkdown Composer: https://multimarkdown.com/composer4/
Doing Research
Solid blocks of time to focus, Meditation with Calm: https://apps.apple.com/us/app/calm/id571800810
Pomodoro method: https://todoist.com/productivity-methods/pomodoro-technique
Intermittent Fasting app (Zero): https://www.zerofasting.com
Document your energy
Spencer:
Taking naps
Cultivate the zone
Having Music on
Reducing Friction
Spencer’s super-wide display: https://www.samsung.com/us/computing/monitors/gaming/49--odyssey-g9-gaming-monitor-lc49g95tssnxza/
Financial motivations
Ben:
Have reminders
Keeping main work in front of you
Soundtracks are great for concentration
Batman soundtrack link
Cyberpunk/FtL, Passengers
Keeping things fresh with coding problems
A distraction you have control over
Noise cancelling headphones
Protect your energy and time
Decision fatigue
Dimitri:
Drift between interests to avoid burnout
Burnout anecdote: https://rattibha.com/thread/1388107620574171140?lang=en
Concentrating in silence
Understand the problem well before diving in
Dimitri was wrong; Gluconeogenesis: https://en.wikipedia.org/wiki/Gluconeogenesis
Also, join us for #CompleteTheCode and Compiler Error, two segments that test both your knowledge and our knowledge on Swift, Apple, and all things development!
Your hosts for this week:
Spencer Curtis
Ben Gohlke
Fernando Olivares
Paul Solt
Dimitri Bouniol
Be sure to also sign up to our monthly newsletter, where we will recap the topics we discussed, reveal the answers to #CompleteTheCode, and share even more things we learned in between episodes.
You are what makes this show possible, so please be sure to share this with your friends and family who are also interested in any part of the app development process.
Sponsor
This week's episode of Code Completion is brought to you by Weekly Swift Exercises. Go to https://mailchi.mp/hey/weekly-swift-exercise-signup today to subscribe!
Complete the Code
What could potentially go wrong with this particular error handling code?
// What could potentially go wrong with the code below?
NSError *theError;
BOOL result = [anObject doSomethingThatCanFailWithError:&theError];
if (theError) {
NSLog(@"The operation failed! %@", theError);
}
Be sure to tweet us with hashtag #CompleteTheCode if you know the answer!
Compiler Error
This week's Compiler Error has a theme: Blast from the past!
1 - Swift Literals: Although Dictionaries prohibit it, ExpressibleByDictionaryLiteral allows for multiple entries with the same key.
2 - Emacs key bindings in Cocoa: You may know of the ⌘⌫ command to delete the entire line to the left of the text cursor, but ⌃K can be used to delete the line to the right of the text cursor.
3 - Objective-C method names in the iOS SDK: convolveWithDestination:tempBuffer:sourceOffsetToRegionOfInterestX:sourceOffsetToRegionOfInterestY:kernel:kernelHeight:kernelWidth:divisor:backgroundColor:options: is one of many related Objective-C methods in the Accelerate framework for manipulating images.
4 - Unicode names for Mac modifier keys: Located between the control and command keys on the keyboard, the option key is unoriginally called OPTION KEY in the unicode specification, but was also known as the “closed apple key” on Apple II series computers.
1 hr 12 min
August 03, 202140: Merge Commits Are Evil
Welcome to Code Completion, Episode 40! We are a group of iOS developers and educators hoping to share what we love most about development, Apple technology, and completing your code!
Follow us @CodeCompletion on Twitter to hear about our upcoming livestreams, videos, and other content.
Today, we discuss:
Code Completion Club: https://codecompletion.io/jointheclub
Indie App Spotlight, with a new app for you to check out:
Billsly by Clayton Watkins (@CaptainnClayton): https://apps.apple.com/us/app/billsly/id1560270556
The need for git as a modern developer
Basic usage of git
MacOS versioning is similar but different
Using Git as a note taking tool (in the command line, preferably) to get more comfortable with it.
Good commit messages and staging
Setting up a global git ignore file
Git Apps:
GitHub Desktop: https://desktop.github.com
Git Tower: https://www.git-tower.com/mac
Fork: https://git-fork.com
Git Kracken: https://www.gitkraken.com
What a Pull request is, and why they are useful
GitHub: https://github.com
GitLab: https://about.gitlab.com
Bitbucket: https://bitbucket.org/product
Doing a self reviews before having others review your code
Setting up branch protections to keep from messing up
Dimitri’s Git starter link and wiki: https://github.com/lambdaschool/ios-git-setup
Bonus: Spooning by Bitbucket: https://www.youtube.com/watch?v=8wUOUmeulNs
Also, join us for #CompleteTheCode, a segment that tests your knowledge on Swift, Apple, and all things development!
Your hosts for this week:
Spencer Curtis
Dimitri Bouniol
Be sure to also sign up to our monthly newsletter, where we will recap the topics we discussed, reveal the answers to #CompleteTheCode, and share even more things we learned in between episodes.
You are what makes this show possible, so please be sure to share this with your friends and family who are also interested in any part of the app development process.
Sponsor
This week's episode of Code Completion is brought to you by Huuungry. Search for Huuungry on the iOS App Store today to give it a try: https://apps.apple.com/app/apple-store/id1448552588?pt=14724&ct=CodeCompletion1&mt=8
Complete the Code
What’s the best way to check if the file that is passed in exists or not?
// Assuming these steps need to be performed in the order
// they are presented, how would you improve this code?
let results = array
.map { $0.path }
.filter { $0.hasPrefix("/Documents") }
.compactMap { $0.components(separatedBy: "/").last }
.prefix(maxEntries)
Be sure to tweet us with hashtag #CompleteTheCode if you know the answer!
56 min
July 27, 202139: Breakpoint Breadcrumbs
Welcome to Code Completion, Episode 39! We are a group of iOS developers and educators hoping to share what we love most about development, Apple technology, and completing your code!
Follow us @CodeCompletion on Twitter to hear about our upcoming livestreams, videos, and other content.
Today, we discuss:
Code Completion Club: https://codecompletion.io/jointheclub
Indie App Spotlight, with two apps for you to check out:
SongKit by Thomas Grapperon (@tgrapperon): https://songkit.app
Minimal by Arthur Van Siclen (@arthurofbabylon): https://minimal.app
Debugging Discussion
View Debugging
Reveal: https://revealapp.com
Console Commands: v, p, po
The usefulness of print debugging
Breakpoints
Parallel Universes: https://www.youtube.com/watch?v=kpk2tdsPh0A
os_signpost and logging
Also, join us for #CompleteTheCode and Compiler Error, two segments that test both your knowledge and our knowledge on Swift, Apple, and all things development!
Your hosts for this week:
Fernando Olivares
Spencer Curtis
Dimitri Bouniol
Be sure to also sign up to our monthly newsletter, where we will recap the topics we discussed, reveal the answers to #CompleteTheCode, and share even more things we learned in between episodes.
You are what makes this show possible, so please be sure to share this with your friends and family who are also interested in any part of the app development process.
Sponsor
This week's episode of Code Completion is brought to you by Weekly Swift Exercises. Go to https://mailchi.mp/hey/weekly-swift-exercise-signup today to subscribe!
Complete the Code
What’s the best way to check if the file that is passed in exists or not?
// Assuming these steps need to be performed in the order
// they are presented, how would you improve this code?
let results = array
.map { $0.path }
.filter { $0.hasPrefix("/Documents") }
.compactMap { $0.components(separatedBy: "/").last }
.prefix(maxEntries)
Be sure to tweet us with hashtag #CompleteTheCode if you know the answer!
Compiler Error
This week's Compiler Error has a theme: Error Handling!
1 - NSError supports built-in error recovery through the use of a recovery attempter, allowing the origin of the error a chance to handle things like retries when delivered to an NSAlert.
2 - A custom Swift Error type can provide localized description information by conforming to LocalizedError and overriding localizedDescription.
3 - Although it isn’t possible to specify the type of Error thrown from a method in Swift, it is possible to restrict the error type when it is delivered within a Result.
4 - It is possible to omit localized descriptions and failure reasons when creating an NSError while still making this information available to consumers of the error by creating a userInfo provider for the error domain.
1 hr 5 min
July 20, 202138: We Hand Chiseled Our Corners
Welcome to Code Completion, Episode 38! We are a group of iOS developers and educators hoping to share what we love most about development, Apple technology, and completing your code!
Follow us @CodeCompletion on Twitter to hear about our upcoming livestreams, videos, and other content.
Today, we discuss:
Indie App Spotlight, with two apps for you to check out:
ActiveDock by Gerasim Sergey (@gerasim_sergey): https://noteifyapp.com/activedock/
Timing by Daniel Alm (@daniel_a_a): https://timingapp.com/?lang=en
Server-configured UI
AirBnB: https://medium.com/airbnb-engineering/a-deep-dive-into-airbnbs-server-driven-ui-system-842244c5f5
Turbo: https://turbo.hotwired.dev
TVML: https://developer.apple.com/documentation/tvml
iOS VS Web Development
Websites in App Form
Native vs. Cross-Platform Development: Dropbox and Airbnb’s Backpedaling
Also, join us for #CompleteTheCode and Compiler Error, two segments that test both your knowledge and our knowledge on Swift, Apple, and all things development!
Your hosts for this week:
Fernando Olivares
Spencer Curtis
Dimitri Bouniol
Be sure to also sign up to our monthly newsletter, where we will recap the topics we discussed, reveal the answers to #CompleteTheCode, and share even more things we learned in between episodes.
You are what makes this show possible, so please be sure to share this with your friends and family who are also interested in any part of the app development process.
Sponsor
This week's episode of Code Completion is brought to you by Sticky Widgets. Go to https://apps.apple.com/app/apple-store/id1533254320?pt=1765080&ct=CodeCompletion&mt=8 today to check it out!
Complete the Code
What’s the best way to check if the file that is passed in exists or not?
func checkIfExists(_ fileURL: URL) -> Bool {
// What's the best way to check if the file at fileURL
// exists or not?
}
Be sure to tweet us with hashtag #CompleteTheCode if you know the answer!
Compiler Error
This week's Compiler Error has a theme: Email Validation!
1 - "I love Objective-C"@coders.com
2 - [email protected]
3 - admin@[IPv6:2020:de9::1]
4 - appsupport(See Dimitri)@helpdesk
1 hr 12 min
July 13, 202137: Can you Verizon me now?
Welcome to Code Completion, Episode 37! We are a group of iOS developers and educators hoping to share what we love most about development, Apple technology, and completing your code!
Follow us @CodeCompletion on Twitter to hear about our upcoming livestreams, videos, and other content.
Today, we discuss:
Code Completion Club: https://codecompletion.io/jointheclub
Indie App Spotlight, with two apps for you to check out:
SpamSieve by Michael Tsai (@mjtsai): https://c-command.com/spamsieve/
TableFlip by Christian Tietze (@ctietze): https://tableflipapp.com
Interview with Michael Redig: https://twitter.com/mredig
How did you get into development?
When did you start making an “application”?
What was the transition from learning SpriteKit first to more traditional iOS development like?
When did you start making more “properly” built UIKit apps?
What projects are you working on right now?
Any tips for someone who wants to do development full-time?
GitHub CoPilot: https://copilot.github.com
Email Link Protector: https://apps.apple.com/us/app/email-link-protector/id1566806044?mt=12
KnowMe: https://testflight.apple.com/join/iJImKDBd
Also, join us for #CompleteTheCode and Compiler Error, two segments that test both your knowledge and our knowledge on Swift, Apple, and all things development!
Your hosts for this week:
Spencer Curtis
Dimitri Bouniol
Be sure to also sign up to our monthly newsletter, where we will recap the topics we discussed, reveal the answers to #CompleteTheCode, and share even more things we learned in between episodes.
You are what makes this show possible, so please be sure to share this with your friends and family who are also interested in any part of the app development process.
Sponsor
This week's episode of Code Completion is brought to you by Pennant. Go to https://apps.apple.com/app/apple-store/id622463230?pt=1765080&ct=CodeCompletion&mt=8 today to check it out!
Complete the Code
What’s the best way to check if the file that is passed in exists or not?
func checkIfExists(_ fileURL: URL) -> Bool {
// What's the best way to check if the file at fileURL
// exists or not?
}
Be sure to tweet us with hashtag #CompleteTheCode if you know the answer!
Compiler Error
This week's Compiler Error has a theme: Obscure Foundation File Classes!
1 - NSFileVolume is a class that allows you to perform fundamental file system operations on volumes, such as injecting its partitions.
2 - NSFileWrapper represents nodes in the file system, such as directories known as file packages, but can also represent regular files and symbolic links.
3 - NSFileHandle provides a wrapper for file system descriptors, allowing you to perform basic file IO such as reading, writing, and locking files.
4 - NSURLProtocol allows you to implement custom loading strategies for your own protocols, so they can be used anywhere a regular NSURL is used.
1 hr 3 min
July 06, 202136: O(unable to type-check this expression in reasonable time)
Welcome to Code Completion, Episode 36! We are a group of iOS developers and educators hoping to share what we love most about development, Apple technology, and completing your code!
Follow us @CodeCompletion on Twitter to hear about our upcoming livestreams, videos, and other content.
Today, we discuss:
Code Completion Club: https://codecompletion.io/jointheclub
Indie App Spotlight, with two apps for you to check out:
EventZones by Bharat Kumar (@BharatDevk): https://apps.apple.com/us/app/eventzones/id1541274241
Orbit by Malin Sundberg (@malinsundberg): https://timeinorbit.com
Computational complexity, and Big O notation: https://adrianmejia.com/most-popular-algorithms-time-complexity-every-programmer-should-know-free-online-tutorial-course/
The importance of documenting algorithms.
Benchmarking and profiling before optimizing.
CMTime and all its weirdness.
Also, join us for #CompleteTheCode, a segment that tests your knowledge on Swift, Apple, and all things development!
Your hosts for this week:
Spencer Curtis
Dimitri Bouniol
Be sure to also sign up to our monthly newsletter, where we will recap the topics we discussed, reveal the answers to #CompleteTheCode, and share even more things we learned in between episodes.
You are what makes this show possible, so please be sure to share this with your friends and family who are also interested in any part of the app development process.
Sponsor
This week's episode of Code Completion is brought to you by Not Phở. Search for Not Phở on the iOS and macOS App Stores today to give it a try. https://apps.apple.com/app/apple-store/id1525104124?pt=14724&ct=CodeCompletion1&mt=8
Complete the Code
Which key command in Xcode will allow you to rename the variable you have selected everywhere it appears in the current scope?
// Which key command in Xcode will rename the selected variable
// within the current scope?
let lable = UILabel()
lable.text = "Name"
lable.textColor = .blue
rootView.addSubview(lable)
Be sure to tweet us with hashtag #CompleteTheCode if you know the answer!
51 min
June 29, 202135: I Didn't Watch the Video
Welcome to Code Completion, Episode 35! We are a group of iOS developers and educators hoping to share what we love most about development, Apple technology, and completing your code!
Follow us @CodeCompletion on Twitter to hear about our upcoming livestreams, videos, and other content.
Today, we discuss:
Code Completion Club: https://codecompletion.io/jointheclub
Indie App Spotlight, with two apps for you to check out:
AppWage by Kyle Hankinson: https://apps.apple.com/app/appwage/id834352667
Litur by Bezaleel Reuben Ashefor: https://litur.app/
Do you plan a project beforehand or jump in headfirst?
Why design an app in a graphics (non-IDE) application?
Do you a begin a project with the model layer or UI first?
Shit user stories: https://twitter.com/shituserstory
IT Crowd: “Have you tried turning it off and on again?”: https://youtu.be/nn2FB1P_Mn8
Common Project Management Tool Terminology.
Aftershow: Tiktok is crazy town:
NJ crazy squatter: https://vm.tiktok.com/ZMdPJt4X1/
Crazy Ex Husband: https://www.tiktok.com/@pollypocketsy/video/6925516290513833222?lang=en&is_copy_url=1&is_from_webapp=v1
Also, join us for #CompleteTheCode and Compiler Error, two segments that test both your knowledge and our knowledge on Swift, Apple, and all things development!
Your hosts for this week:
Spencer Curtis
Ben Gohlke
Dimitri Bouniol
Be sure to also sign up to our monthly newsletter, where we will recap the topics we discussed, reveal the answers to #CompleteTheCode, and share even more things we learned in between episodes.
You are what makes this show possible, so please be sure to share this with your friends and family who are also interested in any part of the app development process.
Sponsor
This week's episode of Code Completion is brought to you by Super Easy Timer. Search for Super Easy Timer on the Mac App Store to give it a try. https://apps.apple.com/app/apple-store/id1525104124?mt=12
Complete the Code
Which key command in Xcode will allow you to rename the variable you have selected everywhere it appears in the current scope?
// Which key command in Xcode will rename the selected variable
// within the current scope?
let lable = UILabel()
lable.text = "Name"
lable.textColor = .blue
rootView.addSubview(lable)
Be sure to tweet us with hashtag #CompleteTheCode if you know the answer!
Compiler Error
This week's Compiler Error has a theme: Swift Actors!
1 - Actors are a reference type distinct from classes that enable thread-safe access to the data within the actor by gating access behind async members.
2 - Actors can be used from Objective-C so long as the type is marked with @objc, and only non-isolated and asynchronous methods are called.
3 - Actors can be accessed from non-asynchronous code within the same module so long as only let properties or non isolated methods are called.
4 - Actors are implemented using special GCD queues and locks under the hood at compile time, minimizing bugs that arise from incorrect usage of isolated properties.
1 hr 20 min
June 22, 202134: Design is Hard
Welcome to Code Completion, Episode {{insert episode number here}}! We are a group of iOS developers and educators hoping to share what we love most about development, Apple technology, and completing your code!
Follow us @CodeCompletion on Twitter to hear about our upcoming livestreams, videos, and other content.
Today, we discuss:
Code Completion Club: https://codecompletion.io/jointheclub
Indie App Spotlight, with three apps for you to check out:
Word Counter by Christian Tietze: https://wordcounterapp.com
Pro Ledger by Andy Nadal: https://apps.apple.com/us/app/pro-ledger/id1524370871
A tour of Cocoa graphics frameworks: CoreGraphics, AppKit/UIKit, and SwiftUI,
Big Nerd Ranch on bezier paths: https://bignerdranch.com/blog/core-graphics-part-4-a-path-a-path/
Drawing Bézier Curves by Bartosz Ciechanowshi: https://ciechanow.ski/drawing-bezier-curves/
Paintcode: https://www.paintcodeapp.com
How to improve your design skills and what to look out for.
Also, join us for #CompleteTheCode and Compiler Error, two segments that test both your knowledge and our knowledge on Swift, Apple, and all things development!
Your hosts for this week:
Spencer Curtis
Dimitri Bouniol
Be sure to also sign up to our monthly newsletter, where we will recap the topics we discussed, reveal the answers to #CompleteTheCode, and share even more things we learned in between episodes.
You are what makes this show possible, so please be sure to share this with your friends and family who are also interested in any part of the app development process.
Sponsor
This week's episode of Code Completion is brought to you by Johnny B's Bon Voyage eCommerce App course. Visit https://bon-voyage.app/course and be sure to follow Bon Voyage's instructor @jonnybcodes on Twitter to learn more and stay up to date with all his courses!
Complete the Code
Which key command in Xcode will build a template doc comment for the function below?
// Which key command in Xcode will build a template documentation
// comment for the function below?
func doTheCoolThing(name: String, food: Food) -> CoolerThing {
...
}
Be sure to tweet us with hashtag #CompleteTheCode if you know the answer!
53 min
June 16, 202133: 💧 Vapor-ware
Welcome to Code Completion, Episode 33! We are a group of iOS developers and educators hoping to share what we love most about development, Apple technology, and completing your code!
Follow us @CodeCompletion on Twitter to hear about our upcoming livestreams, videos, and other content.
Today, we discuss:
Code Completion Club: https://codecompletion.io/jointheclub
Indie App Spotlight, with three apps for you to check out:
Worth It by Maxime Mazzone: https://apps.apple.com/gb/app/worth-it/id1515358890
Unwind by Kushagra Agarwal: https://apps.apple.com/us/app/unwind-mindful-breathing/id1470613384
Server-side swift,
Vapor,
async/await, and
Futures and Promisses.
Also, join us for #CompleteTheCode, a segment that tests your knowledge on Swift, Apple, and all things development!
Your hosts for this week:
Spencer Curtis
Dimitri Bouniol
Be sure to also sign up to our monthly newsletter, where we will recap the topics we discussed, reveal the answers to #CompleteTheCode, and share even more things we learned in between episodes.
You are what makes this show possible, so please be sure to share this with your friends and family who are also interested in any part of the app development process.
Sponsor
This week's episode of Code Completion is brought to you by Huuungry. Search for Huuungry on the iOS App Store today to give it a try: https://apps.apple.com/app/apple-store/id1448552588?pt=14724&ct=CodeCompletion1&mt=8
Complete the Code
Which key command in Xcode will build a template doc comment for the function below?
// Which key command in Xcode will build a template documentation
// comment for the function below?
func doTheCoolThing(name: String, food: Food) -> CoolerThing {
...
}
Be sure to tweet us with hashtag #CompleteTheCode if you know the answer!
55 min
June 09, 202132: I Learned A Lot Today
Welcome to Code Completion, Episode 32! We are a group of iOS developers and educators hoping to share what we love most about development, Apple technology, and completing your code!
Follow us @CodeCompletion on Twitter to hear about our upcoming livestreams, videos, and other content.
Today, we discuss:
• Code Completion Club: https://codecompletion.io/jointheclub
• Indie App Spotlight, with three apps for you to check out:
• Filmlog by Simon Braun: https://apps.apple.com/us/app/filmlog/id635642879
• The Archive by Christian Tietze: https://zettelkasten.de/the-archive/
• Sensei by Oskar Groth: https://sensei.app
• New announcements at WWDC!
Also, join us for #CompleteTheCode and Compiler Error, two segments that test both your knowledge and our knowledge on Swift, Apple, and all things development!
Your hosts for this week:
Linh Bouniol
Spencer Curtis
Be sure to also sign up to our monthly newsletter, where we will recap the topics we discussed, reveal the answers to #CompleteTheCode, and share even more things we learned in between episodes.
You are what makes this show possible, so please be sure to share this with your friends and family who are also interested in any part of the app development process.
Sponsor
This week's episode of Code Completion is brought to you by Sticky Widgets. Go to the App Store today to check it out!
Complete the Code
Be sure to tweet us with hashtag #CompleteTheCode if you know the answer!
Compiler Error
This week's Compiler Error has a theme: WWDC!
1 - Marking the start of the jacket trend that would be used for several years, WWDC10 gave each attendee a black track jacket with the number 10 stitched on the back.
2 - WWDC12 was the last event hosted by Steve Jobs, but did see the introduction of the final generation of AirPort Extremes and Time Capsules, which would no longer be updated.
3 - WWDC13 sold out in a tremendously fast 71 seconds, but some attendees would later say attendance was worth it since it featured Phil Schiller’s "Can't innovate anymore, my ass!" quote.
4 - WWDC16 marked the first departure from holding the Keynote at the Moscone Center in years by hosting it at the Bill Graham Civic Auditorium instead.
1 hr 3 min

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Welcome to Code Completion! We are a group of iOS developers and educators hoping to share what we love most about development, Apple technology, and the life of a developer in today's marketplace.…

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About Code Completion