PropertyWrapper: SwiftUI SizeClass helper

SizeClass.swift

//v1: just find out if sizeclass is regular
@propertyWrapper
struct SizeClass: DynamicProperty {
    @Environment(\.horizontalSizeClass) var horizontalSizeClass
    @Environment(\.verticalSizeClass) var verticalSizeClass

    var wrappedValue: Bool {
        horizontalSizeClass == .regular && verticalSizeClass == .regular
    }
}

//v2: output specific values based on size class
@propertyWrapper
struct SizeClass<T>: DynamicProperty {
    @Environment(\.horizontalSizeClass) var horizontalSizeClass
    @Environment(\.verticalSizeClass) var verticalSizeClass

    var regular: T
    var compact: T

    var wrappedValue: T {
        return horizontalSizeClass == .regular && verticalSizeClass == .regular
            ? regular : compact
    }
}