Swift - Snippets

Links

Swift (Programmiersprache)
https://www.swift.org/

Random / Range

Mit Random erzeugt man Zufallszahlen. Mit dem Range Operator kann man Zahlenbereiche definieren.

let score = Int.random(in: 1...10)
let rating = Int.random(in: 1..<10)
let floatNumber = Float.random(in: 1...10)
let bool = Bool.random(in: 1...10)

Time

Swift - delay code execution

Sound

Swift - Play a Sound

Gestures and Motions

Swift - Shake Motion

String Manipulation

Swift - get file extension
Swift - Strings als Double validieren

Files

How can I get the filename without the extension?

In Swift, you can get the file name without the extension by using the lastPathComponent property of the URL class and then removing the extension using the deletingPathExtension method. Here is an example:

let fileURL = URL(fileURLWithPath: "/path/to/file.txt")
let fileNameWithoutExtension = fileURL.deletingPathExtension().lastPathComponent
print(fileNameWithoutExtension) // Output: "file"

You can also achieve the same result using the NSString API, here's an example:

let filePath = "/path/to/file.txt"
let fileNameWithoutExtension = (filePath as NSString).deletingPathExtension
print(fileNameWithoutExtension) // Output: "file"

JSON in Swift

Swift & JSON

Farben

UIColor Erweiterung für Hexadezimalwerte

Extensions

Swift - View Extensions

Klassen

Klassen vergleichen

How can I check if two instances of a class are the same

In Swift, you can check if two instances of a class are the same by using the equality operator (==) or the identity operator (===).

The equality operator == checks if two instances have the same values for their properties. In order for this to work, the class must conform to the Equatable protocol and implement the == operator:

class MyClass: Equatable {
    let property: Int

    static func == (lhs: MyClass, rhs: MyClass) -> Bool {
        return lhs.property == rhs.property
    }
}

let instance1 = MyClass(property: 1)
let instance2 = MyClass(property: 1)
let isEqual = instance1 == instance2 // true

The identity operator === checks if two instances refer to the same memory address. It checks if two instances are the same instance.

let instance1 = MyClass(property: 1)
let instance2 = MyClass(property: 1)
let isIdentical = instance1 === instance2 // false

Note: It is recommended to use the === operator if you need to check if two instances are the same instance, and use the == operator if you need to check if two instances have the same values for their properties.