README.md

ConditionalSwiftUI

A Library that makes SwiftUI conditional statements easy

Usage

.if

This method applies the given transform if the given condition evaluates to true.

Text("Hello, World!")
    .if(someCondition) { view in
        view
            .foregroundColor(.red)
            .background(Color.yellow)
    }

if with else

same with .if but with else

Text("Hello, World!")
    .if(someCondition) { view in
        view
            .foregroundColor(.red)
            .background(Color.yellow)
    }, else: { view in
        view
            .foregroundColor(.blue)
    }

ifLet

same with if, but it takes an optional value instead of a boolean and unwraps it

struct ContentView: View {
    @State private var color: Color? = nil
    
    var body: some View {
        Text("Hello World")
            .ifLet(color) { color, view in
                view
                    .foregroundColor(color)
            }
    }
}

ifLet with else

same with .ifLet but with else

struct ContentView: View {
    @State private var color: Color? = nil
    
    var body: some View {
        Text("Hello World")
            .ifLet(color) { color, view in
                view
                    .foregroundColor(color)
            }, else: { view in
                view
                    .foregroundColor(.red)
            }
    }
}

extractView

this method extracts the view like in the .if statement, especially useful when using if #available() statement

Toggle("I'm a conditionally modified Toggle!", isOn: .constant(true))
    .extractView { view in
        Group {
            if #available(iOS 15.0, *) {
                view
                    .tint(.indigo)
            }
            else {
                view
                    .toggleStyle(SwitchToggleStyle(tint: .init(.systemIndigo)))
            }
        }
    }

Implementation, and its drawbacks

This implementaion is not new, and it's been used widely for the time being, but be aware that it could cause you some trouble with animations, as described in this article, so be cautious about it when using this library.