Conditional view modifiers in SwiftUI

ExampleView.swift

struct ExampleView: View {
    var body: some View {
        Text("Example")
            .if(true) { $0.foregroundColor(.red) }
    }
}

ViewExtension.swift

extension View {
    @ViewBuilder
    public func `if`<V>(_ condition: Bool, input: (Self) -> V) -> some View where V: View {
        if condition {
            input(self)
        } else {
            self
        }
    }
}

For those times you need an else as well:

@ViewBuilder
func `if`<T: View, O: View>(_ condition: Bool, transform: @escaping (Self) -> T, else: @escaping (Self) -> O) -> some View {
	if condition {
		transform(self)
	} else {
		`else`(self)
	}
}

struct ExampleView: View {
    var body: some View {
        Text("Example")
            .if(true) { 
                $0.foregroundColor(.red) 
            } else: { 
                $0.foregroundColor(.blue) 
            }
    }
}