I have moved this over to the Tech Interview Cheat Sheet Repo and has been expanded and even has code challenges you can run and practice against!
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Steve Wilber stevewilber
tsiege
/ The Technical Interview Cheat Sheet.md
Last active
December 5, 2025 18:04
This is my technical interview cheat sheet. Feel free to fork it or do whatever you want with it. PLEASE let me know if there are any errors or if anything crucial is missing. I will add more links soon.
steipete
/ PSPDFUIKitMainThreadGuard.m
Last active
October 30, 2025 15:53
This is a guard that tracks down UIKit access on threads other than main. This snippet is taken from the commercial iOS PDF framework http://pspdfkit.com, but relicensed under MIT. Works because a lot of calls internally call setNeedsDisplay or setNeedsLayout. Won't catch everything, but it's very lightweight and usually does the job.You might n…
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| // Taken from the commercial iOS PDF framework http://pspdfkit.com. | |
| // Copyright (c) 2014 Peter Steinberger, PSPDFKit GmbH. All rights reserved. | |
| // Licensed under MIT (http://opensource.org/licenses/MIT) | |
| // | |
| // You should only use this in debug builds. It doesn't use private API, but I wouldn't ship it. | |
| // PLEASE DUPE rdar://27192338 (https://openradar.appspot.com/27192338) if you would like to see this in UIKit. | |
| #import <objc/runtime.h> | |
| #import <objc/message.h> |
anonymous
/ gist:1406238
Created
November 29, 2011 20:09
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| Originally: | |
| https://gist.github.com/7565976a89d5da1511ce | |
| Hi Donald (and Martin), | |
| Thanks for pinging me; it's nice to know Typesafe is keeping tabs on this, and I | |
| appreciate the tone. This is a Yegge-long response, but given that you and | |
| Martin are the two people best-situated to do anything about this, I'd rather | |
| err on the side of giving you too much to think about. I realize I'm being very | |
| critical of something in which you've invested a great deal (both financially |