Toit

Im trying sometihng like

```
tasks := []
tasks.add (task (:: log.info "foo")
tasks.add (task (:: do.something "else")
tasks.do: |t| t.wait
log.info "all done"
```

But I believe this isn't doing what I'd expect.
Is there a way to wait for a collection of actions such as tasks in this way?

https://libs.toit.io/core/class-Task#group(2%2C0%2C0%2Crequired)

You can run a set of lambdas as a group individual tasks and wait for them to complete.

You can find some example usages in the tests: https://github.com/toitlang/toit/blob/master/tests/task-group-test.toit

It is a bit tricky to write this correctly, so I recommend trying to map your problem to a call to `Task.group`.

The alternative is probably creating a `monitor.Semaphore` and down it `tasks.size` times and up it in `finally` clauses in the individual task lambdas.

Here is another example that shows the simplifications achieved when starting to use `Task.group` in Jaguar: https://github.com/toitlang/jaguar/commit/0170761a87c43ad025ddbec0e77b36ff66d9f31f.