I guess that's heex. I don't like JSX style but the it's not as crazy as javascript. It's okay. With first-class function, passing a thunk that returns template

I guess that's heex. I don't like JSX style but the it's not as crazy as javascript. It's okay. With first-class function, passing a thunk that returns template (not in plain string) around is also extensible. But slot is also okay to me. The trade-off of compile time construct is it's harder to do thing in dynamic way.