why does `launch` exist if `async` can return Unit?

# coroutines

[ursus]

why does launch exist if async can return Unit?

[basher]

Also has differences in exception handling: https://stackoverflow.com/questions/46226518/what-is-the-difference-between-launch-join-and-async-await-in-kotlin-coroutines#46226519

[ursus]

still dont see why launch exists

[gildor]

Because they have different semantics, async throws exception on place where result is requested, launch throws if exception happened. Both make sense but for different cases, for launch do run and forget is fine, for async is not fine