All Done, Goodbye.

iOS notes by @dkhamsing in California

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SwiftUI Preview resume shortcut

Option + Command +P

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Use removeAll(where:) instead of .filter { x != condition }

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Using multi-cursor to speed development in Xcode

New Multi-cursor support in xcode makes editing faster and easier than ever

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⌘ + SHIFT + J

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Xcode: Fold/Unfold shortcuts

Fold All                      ⌘ ⌥ ⇧ ←    command + option + shift + left Unfold All                    ⌘ ⌥ ⇧ →    command + option + shift + left

via

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SHIFT COMMAND J

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Xcode Build Time Tips

To show build time in the Xcode top status: In Terminal, type this line 

defaults write com.apple.dt.Xcode ShowBuildOperationDuration YES

Reference

- https://www.onswiftwings.com/posts/build-time-optimization-part1/

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When Xcode is not really helping you, try out using print to read out a variable

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Don’t find with Xcode, change some preferences

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Let’s take a first look at some of UICollectionView’s new APIs, and how we can use them to build table view-like lists.

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Swift Codable With Custom Dates

extension Podcast {  init(from decoder: Decoder) throws {    let container = try decoder.container(keyedBy: CodingKeys.self)    name = try container.decode(String.self, forKey: .name)    artistName = try container.decode(String.self, forKey: .artistName)    url = try container.decode(URL.self, forKey: .url)    let dateString = try container.decode(String.self, forKey: .releaseDate)    let formatter = DateFormatter.yyyyMMdd    if let date = formatter.date(from: dateString) {        releaseDate = date    } else {        throw DecodingError.dataCorruptedError(forKey: .releaseDate,              in: container,              debugDescription: "Date string does not match format expected by formatter.")    }  } }

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Swift UI Property Wrappers

Learn what SwiftUI's @State, @Binding, @StateObject, and @ObservedObject property wrappers do, and when they should be used.

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In this tutorial a xml file will be parsed using a XMLParser object. The results of the parsing will be displayed in a Table View. This tutorial is made with Xcode 10 and built for iOS 12.

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In Xcode, you can quickly toggle breakpoints by pressing command + \

https://twitter.com/scottsmithdev/status/1274049868529463297

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Learn how to make HTTP requests and parse the response using the brand new Combine framework with foundation networking.

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Learn how to implement the new BackgroundTasks framework in iOS 13

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Using UIContextMenuInteraction to add peek-like previews & menus to non-3D Touch devices