joe522
krzyzanowskim
/ where-where.swift
Last active
May 19, 2022 12:38
Where "where" may be used? http://blog.krzyzanowskim.com/2015/11/13/where-where-may-be-used/
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| import Cocoa | |
| // for-in | |
| func checkForIn(array: [Int], dict: [Int: String]) { | |
| for num in array where dict[num] != nil { | |
| num | |
| } | |
| } | |
| checkForIn([1,2,3,4], dict: [1:"one", 2:"two"]) |
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| class Person { | |
| class func classString() -> String { | |
| return NSStringFromClass(self) | |
| } | |
| } | |
| Person.classString() // "_TtC11lldb_expr_06Person" |
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> |