Swift is a general-purpose, multi-paradigm, compiled programming language developed by Apple Inc. and the open-source community. First released in 2014, Swift was developed as a replacement for Apple’s earlier programming language Objective-C, as Objective-C had been largely unchanged since the early 1980s and lacked modern language features.
To convert a Double to a String in Swift, you can use the String(doubleValue) initializer. For example:
let myDouble = 3.14159
let myString = String(myDouble)
This will create a new String with the value “3.14159”.
Alternatively, you can use string interpolation to include the value of the Double in a string. This allows you to include the double value in a string that contains other text or characters. For example:
let myDouble = 3.14159
let myString = "The value of pi is: \(myDouble)"
This will create a new String with the value “The value of pi is: 3.14159”.
I recently completed one medium size SwiftUI project and, it was a wonderful experience with MVVM architecture. I took some time to grab everything, but my struggles been paid off.
I no longer want to do a new project on the storyboard. You should not do it either. No fear just start you will finish it soon.
Storyboard was some improvements than single xib file, at least you did not have to open many tabs for xib which always slowed down Xcode. But it was always like this on Apple platform since Xcode 3.2, developing app means you have to handle xib file.
I always liked Android’s XML way than a xib file on a Xcode.
I never liked the Auto Layout either, but it always worked on all devices. But I hated it when I had to break a few constraints to add a few more to make space for a new TextField or Image. It has never been easy.
The most useful thing about SwiftUI that how easy it is to create a view and reuse it anywhere if you can make it in that way. The @Binding and @State are really helpful.
And the ViewModel updates a model which your view observes always. So my ViewModel has a property @Published whenever it changes its all observers will get the update by calling the property @ObservedObject or @StateObject.
The SwiftUI is very new but it is the best thing for app developers on Apple platforms. I even converting few more apps in SwiftUI in the coming months.
Radio Buttons group in SwiftUI, is not hard to implement classic radio button group in your SwiftUI. Though this project is in very early stage, I will work on this in coming days to enhance its features.
Installation: Add RadioButtonGroup.swift in your SwiftUI project.
Usages: Create model class, must conform to RadioModelable protocol
class RadioModel: RadioModelable {
var id: Int
var isChecked: Bool
var label: String
required init(id: Int, isChecked: Bool, label: String) {
self.id = id
self.isChecked = isChecked
self.label = label
}
}
Create data provider class, must conform to RadioDataProviding protocol
class DataProvider<T>: RadioDataProviding where T: RadioModelable {
@Published var items: [RItem] = []
init() {
self.items = getItems()
}
func getItems() -> [T] {
return [T(id: 1, isChecked: true, label: "Radio 1"),
T(id: 2, isChecked: false, label: "Radio 2"),
T(id: 3, isChecked: false, label: "Radio 3")]
}
func toggle(id: Int) {
for var item in self.items {
if item.id == id {
item.isChecked = true
} else {
item.isChecked = false
}
}
self.objectWillChange.send()
}
}
