Hi again,

> I can imagine a "spawn" statement in a concurrent Caml that expects
> that the function passed as parameter be pure.  And of course a function
> would only be pure if it did not modify global state and only invoked
> pure functions itself.

Incidentally, it is of course possible for a function to invoke impure
functions while still being pure itself (ie, it ensures the impurity
does not "leak out").  One question to those more familiar with current
language research: any recommended resources out there about this topic?

Cheers,
Dario Teixeira