Re: Adding a "Project Types" layer to a project

[bobduff@world.std.com (Robert A Duff)]

In article <3186E51C.250@post.drexel.edu>,
Chris Papademetrious  <st92j0gw@post.drexel.edu> wrote:
> If I use the type from the package "vectors" directly, it works.  If I
>create a subtype in types, and then use that, it fails.  What am I
>missing?  Thanks in advance...

There is no "+" declared in package Types.  Hence the error message.
The "+" you want to call is declared in Vectors, and it has to be
directly visible in order to call it.

You could rename the "+" operator into Types.

Or, you could say "use type Vector;" in Test.

Or, you could use a derived type instead of a subtype.  This will create
a new type, with an inherited "+", which may or may not be what you
want.

- Bob

P.S. I don't particularly like the idea of having a Types package, which
is just a big jumble of totally unrelated stuff.