Java Performance/Python etc

[Rodney R. Korte]

On Wed, 20 Sep 2000 12:40:11 +0100 (BST), Simon Bowring wrote:

Interesting history on "static" in C++.  Didn't know that.

>language! A different example of this is when Soupstrap wanted to 
>introduce a keyword "virtual" for pure virtual member functions, 
>instead you have to say: "void myVirtualFunction()=0;".  
>
>So in this context "=0" means "virtual" (i.e. that the implementation 
>of the method/member-function needs to be supplied by derived 
>classes). Hmmm - obvious!

Tsk, tsk, Simon.  "void myVirtualFunction()=0;" isn't even a 
valid declaration.

The virtual "keyword" specifies a member to be virtual.  The "=0",
in combination with the "virtual" keyword means the function is
"pure virtual" ("abstract" in OO terminology).

And did you know that the behavior of a destructor declared virtual
somewhere in a class heirarchy means something a little different
that for any other function?

Rodney
--
Rodney R. Korte
rkorte@psu.edu
Phone: 814-863-0817  Fax: 814-863-6239
http://www.personal.psu.edu/rrk102