class Scope
The scope a Task.scope block is given: the tasks started with #spawn
are waited for when the block ends.
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Methods
def spawn[T](&: () -> T) -> Task[T]
Starts a task in the scope running the block, as Task.spawn does, and
returns it.
Task.scope waits for it before it returns.
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def cancel -> Void
Cancels the scope's tasks (Task#cancel); Task.scope then waits for
them and returns the block's value normally.
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