Questions tagged [swift]
Swift is a general-purpose, multi-paradigm, compiled programming language developed by Apple Inc. for iOS, iPadOS, macOS, watchOS, tvOS, Linux, and z/OS.
660 questions
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Swift: Find neighbor-elements within an array
I need a function which finds the left and right neighbor-element within an integer-array, based upon a given index. If the given element is 0, then it shall return largest index as left neighbor. ...
- 5,044
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Swift for CLI tools (traversing directories, reading text files)
To compare ergonomics and performance of some languages for my hobby projects, I have written a simple lines of code counter in Swift, Go, Rust and Python. It scans a given directory tree for source ...
user292421
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Using a ViewModel in a simple SwiftUI screen with a list and API call
I'm building a SwiftUI screen that displays a list of notifications, using a ViewModel to handle state and API calls. The screen is fairly straightforward: it has a header and a paginated notification ...
- 111
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Swift - Process file with key-value pairs
I got to process a simple text-file, which contains key-value pairs. Key-value shall be separated by a tabulator.
Here's the prototype, which I figured out:
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- 5,044
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SwiftUI NavigationSplitView three-column layout
For getting familiar with SwiftUI NavigationSplitView, I created a prototype, which implements a three-column view.
Screenshot:
Code (View):
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- 5,044
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44
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Class to make UserDefaults get/set easier in Swift
I created the following class to ease UserDefaults get/set within my Swift project.
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- 275
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82
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SwiftUI: Handling number-inputs via TextField (actually String)
I'm creating a Settings-form in SwiftUI. One of the expected values is a double.
I tinkered with NumberFormatter, but it didn't work well for me.
Moreover I had to find a way making invalid values ...
- 5,044
6
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1
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Showing an audio waveform from sample audio data with user interaction for zoom in/out
I want to show an interactive audio waveform like this.
I've extracted the sample data using AVAssetReader. Using this data, I'm drawing a UIBezierPath in a Scrollview's contentView. Currently, when I ...
4
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Swift Arrays: Write a rotate-right function
Task:
Write a function which rotates all elements of a given array to the right.
Example: [1, 2, 3] => [3, 1, 2]
My solution:
...
- 5,044
4
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2
answers
203
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Swift String-extension 'countOccurrencesOfChar'
Loosely inspired by Ruby's String.count-method I wrote a similar Swift-method myself as an extension to the String-class. Then I had the idea to use a second parameter with which you can control if ...
- 5,044
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Swift: 'Working with double-optionals'-exercise
Task: Write a function, which receives an optional array of optional integers and returns a none-optional integer. In case the array isn't nil: Return one randomly selected integer. In case the array ...
- 5,044
4
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SwiftUI TimeUnits-Converter App
The given task is to implement a time-units app.
I guess I got the main logic right, but concerning the UI-coding there could be improvements.
Here's my code:
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- 5,044
3
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1
answer
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Swift: Mocking a REST API-request
I have read the last two days through several tutorials about how to mock a HTTP-request against a REST API.
Finally I made a prototype for applying, what I have understood from the tutorials.
Here's ...
- 5,044
3
votes
2
answers
389
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Write a Swift-function, which computes the Digital Root
Task: Write a function, which computes the Digital Root of a given number n.
Here's the solution, which I developed:
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- 5,044
3
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1
answer
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Lists With Generic Data Types In SwiftUI
I've written a simple list in SwiftUI that accepts a generic data type.
The goal was to make a reusable list where when an item was selected, the list would execute a callback with the selected data.
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