Is passing the `ctx` to the `launch` method redund...

# coroutines

[nwh]

Is passing the ctx to the launch method redundant in this scenario?

val ctx = newSingleThreadContext("sample")
val scope = CoroutineScope(ctx)
scope.launch(ctx) { }

[louiscad]

Yes it is. It will no-op because it's the same

[voddan]

Why does launch accepts an optional context then? Can't the API be minimized to always use the scopes?

[louiscad]

The additional and optional CoroutineContext is folded with the context from the scope. That gives you structured concurrency, but you can still launch in another dispatcher, or add something to the scope's context.