Featured4 min read
The Most Difficult Thing I've Ever Done - Starting a Company
Years ago I wrote that finishing a book was the hardest thing I'd ever done. Starting a company has taken the title, and it's hard in a different way.
Hi, I'm Andrew Wagner.
A staff engineer turned cofounder. iOS by heart, backend by happenstance. Right now I'm building Odo, an AI email assistant, with my cofounder, and learning company building and AI-native development as I go. I write here about what I learn along the way: the product, the process, and working with AI.
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New around here? Try these.Taking the Plunge
How I came to the decision to finally take the plunge and go independent.
3 min readComfortably Uncomfortable
A look at how pushing through discomfort is exactly where I want to be.
4 min readThe Most Difficult Thing I've Ever Done - Writing a Technical Book
An in-depth discussion of my experience writing a technical book about learning Swift.
14 min readRecent posts
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8 min read
Effect of Swift Extension and Libraries On Build Time
Does separating code into extra extensions and/or modules have a meaningful impact on compile times?
9 min read
Developing an Algorithm Case Study: Area encircled by multiple paths on a 2D plane
While toying around with an app idea I came across the need to develop my own algorithm and therefore return to Data Structures and Algorithms techniques I learned in college. Here is the problem, my process, and my solution.
1 min read
JSON Encoder Change in Swift 5.1
While updating my app for the iOS 13 SDK, I came across a change in JSONEncoder that broke some of the logic in my code. It now supports encoding top-level values.
1 min read
Swift Quiz – Boolean Expression
What is the value of result after doing: let result = false && true || true
2 min read
Careful with Fancy KVO Callback
Be warned: there may be a bug in the fancier version of Key Value Observering. I discovered it while implementing a progress callback in my Decree web request library.
4 min read
Singletons and Shared Instances in Swift
A couple very common programming patterns, especially in the Apple world, are Singleton and Shared Instance. People often confuse the two and there's also controversy around them. Let's clear these things up.
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