base numeric type?

[Arthur Dent]

Hi all...

I'm playing around experimenting with Extensions and R&D'ing what's new.

There's a procedure I would like to add to numbers, and I was wondering, is
there any "base" number type, that I could put an extension on, as opposed
to manually adding it to all the numeric types...
decimal, double, single, long, short, etc... ??

Cheers!
Arthur Dent.

[Cor Ligthert[MVP]]

Arthur,

What is wrong with the for all base type object, normal can from that any
numeric type be converted as long as it does not conflict with the receiving
field? Convert from int to double goes, from double to integer can conflict.

I understand that it is not a direct answer on your question, however I use
in that often the sample of the car I had. It had a square steeringwheel
(Austin Allegro). I found it great, it was something different and probably
from the future. In fact it had only problems; To much to tell here. Square
wheels seldom function, however they are invented again and again and again.

And don't tell converting takes time, all new steering wheels thake behind
the scene probably much more time.

Just my idea reading your message

Cor

[Armin Zingler]

"Arthur Dent" <hi************ *********@yahoo .comschrieb

Most important last: What are you trying to do with these types?

Well, for example, take a inanely simple numeric function,
"IsPositive ". I know this is not something you'd actually code,
because it is SO simple, but as an example.

I'd like to take my new function, and be able to do something akin
to

<Extension()Pub lic Function IsPositive(targ et As
anyNumericType) As Boolean

As opposed to having to do this...

<Extension()Pub lic Function IsPositive(targ et As Short) As
Boolean <Extension()Pub lic Function IsPositive(targ et As
Integer) As Boolean <Extension()Pub lic Function
IsPositive(targ et As Long) As Boolean <Extension()Pub lic
Function IsPositive(targ et As Single) As Boolean <Extension()>
Public Function IsPositive(targ et As Double) As Boolean <Extension()>
Public Function IsPositive(targ et As Decimal) As
Boolean

It would be very nice if all the "number" types did implement some
common INumber interface, but as far as I know, they don't, do they?

No, only those that you see in the object browser.

Why not simply use ">0" in this case (without using Extensions)? Or
Math.Sign which is overloaded but already there. What else do you want to do
with "target"?
Armin