Macro cx 

macro_rules! cx {
    ($($condition:expr => $class:expr),* $(,)?) => { ... };
}

Utility macro for conditional class composition

Example

use dioxus_ui_system::cx;

let is_active = true;
let is_disabled = false;
let classes = cx!(
    true => "base-class",
    is_active => "active",
    is_disabled => "disabled",
);