Pure functions in D

[Sergey Gromov]

bearophile <bearophileHUGS at lycos.com> wrote:
> > Since this wasn't touched on in the article, I want to point out
> > that Haskell allows "pure functions" to throw exceptions, but not
> > catch them.
> 
> This is quite interesting and it has some consequences. So a pure
> function can call another pure function only if the second one can't
> throw?

I cannot see how this follows.  If a function calls another function 
that may throw, it doesn't automatically make it catch.  So the call may 
be of any depth, and an exception may be thrown at any level.  You just 
not allowed to try/catch, nor various forms of scope.