| // | |
| // YPLayoutGuideHelper.m | |
| // | |
| // Created by Yuya Tanaka, 2015 | |
| // | |
| // This is free and unencumbered software released into the public domain. | |
| // Refer: http://unlicense.org/ | |
| // | |
| // automaticallyAdjustsScrollViewInsets doesn't work for child view controllers | |
| // hosted by something like Container View or UIPageViewController. |
All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.
Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.
elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent
| import Foundation | |
| import XCPlayground | |
| XCPSetExecutionShouldContinueIndefinitely() | |
| func getAllEmojis(completion: String? -> ()) { | |
| let url = NSURL(string: "http://www.unicode.org/Public/UCD/latest/ucd/EmojiSources.txt")! | |
| NSURLSession.sharedSession().dataTaskWithURL(url) { data, response, error in | |
| guard let data = data where error == nil else { | |
| completion(nil) |
| //: Playground - noun: a place where people can play | |
| import XCPlayground | |
| import UIKit | |
| // MARK: - Paragraph Styles | |
| let headlineParagraphStyle = NSMutableParagraphStyle() | |
| headlineParagraphStyle.lineHeightMultiple = 0.8 |
| // | |
| // MARK: Font utilities | |
| // | |
| enum FontFamily : String { | |
| case HelveticaNeue = "Helvetica Neue" | |
| case MontSerrat = "Montserrat" | |
| } | |
| enum FontWeight { |
| # Thanks to commenters for providing the base of this much nicer implementation! | |
| # Save and run with $ python 0dedict.py | |
| # You may need to hunt down the dictionary files yourself and change the awful path string below. | |
| # This works for me on MacOS 10.14 Mohave | |
| from struct import unpack | |
| from zlib import decompress | |
| import re | |
| filename = '/System/Library/Assets/com_apple_MobileAsset_DictionaryServices_dictionaryOSX/9f5862030e8f00af171924ebbc23ebfd6e91af78.asset/AssetData/Oxford Dictionary of English.dictionary/Contents/Resources/Body.data' | |
| f = open(filename, 'rb') |
| var initalArray = [1, 2, 3] | |
| let pointer: UnsafeMutablePointer<Int> = UnsafeMutablePointer(initalArray) | |
| let arrary = Array(UnsafeBufferPointer(start: pointer, count: initalArray.count)) |
| // This ensures that the automaticallyAdjustsScrollViewInsets magic works | |
| // On our newly added view controller as well. | |
| // This triggers _layoutViewController which then triggers | |
| // _computeAndApplyScrollContentInsetDeltaForViewController: | |
| // which finally updates our content inset of the scroll view (if any) | |
| // rdar://19053416 | |
| [self.navigationController.view setNeedsLayout]; |