Structure¶
EmptyModifier¶
An empty, or identity, modifier, used during development to switch modifiers at compile time.¶
Declaration¶
@frozen struct EmptyModifier : ViewModifier
Overview¶
Use the empty modifier to switch modifiers at compile time during development. In the example below, in a debug build the Text view inside ContentView has a yellow background and a red border. A non-debug build reflects the default system, or container supplied appearance.
struct EmphasizedLayout: ViewModifier {
func body(content: Content) -> some View {
content
.background(Color.yellow)
.border(Color.red)
}
}
struct ContentView: View {
var body: some View {
Text("Hello, World!")
.modifier(modifier)
}
var modifier: some ViewModifier {
#if DEBUG
return EmphasizedLayout()
#else
return EmptyModifier()
#endif
}
}

In order to stack multiple modifiers, including the EmptyModifier, see concat(_:)
Availability¶
iOS 13.0+
macOS 10.15+
tvOS 13.0+
watchOS 6.0+
Topics¶
Initializer¶
init() Creates a new modifier that leaves the view unchanged.
Type Property¶
identity A view modifier that leave the view unchanged.
Type Alias¶
Body The type of view representing the body.
Instance Method¶
body(content:) Gets the current body of the caller.