Richard Jones <rich@annexia.org> writes:

> On Tue, Nov 18, 2008 at 10:56:18AM +0100, David Teller wrote:
>>  open System.IO;;
>>  open System.File;;
>
> Your biggest problem is using dot ('.') instead of underscore ('_').

However, this would take away some of the benefits. For example I
prefer using the least amount of opening of modules, to make it easier
to see where the values come from, and let module S = System would
give me both IO and File reachable through S.IO and S.File.

> Using a dot means that the System namespace cannot be extended by
> external packages.  If you use an underscore then an external package
> can extend the namespace (eg. by providing System_Newpackage)

I'm not sure how beneficial it would be that an external package can
extend the hierarchy anyway. Why cannot they simply be put into their
own module name space as they are now? If they aren't decidedly part
of the Batteries, then perhaps they shouldn't be placed under it; for
example, the documentation wouldn't be within Batteries documentation
anyway.

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