Could new keyword help function hijacking and prevented aliasing all over the place??

[Matthew Ong]

On 5/27/2011 2:54 PM, Jacob Carlborg wrote:
Hi Jacob,

See some of the source code shown here. I did not code them, but can 
sense the pattern is not too productive brain cycle invested.
Cycle= trying to locate up the tree of inherited object.

BTW, default D documentation is Not too friendly for inheritance tree 
navigation. Unlike in java.

Not to promote deep inheritance tree. I actually like to flatten them 
using interface template and adaptor pattern. Memory usage and object
tree creation clock cycle is smaller.

With overloading and also runtime dynamic method invocation, it makes

http://hg.dsource.org/projects/dwt2/file/d00e8db0a568/base/src/java/io/ByteArrayInputStream.d
> How big is this problem in practice, how often do need overload (NOT
> override) a method in the subclass that exists in the super class?
>
Actually, the argument of reason of using alias is to prevent hijacking 
as mentioned by others in the URL.

Overloading is actually more frequent than overriding base on data 
modeling because of polymorphic nature of the OOP concept. I can see no 
point of doing various naming for a single calculation. Yes, it can be 
done with various different name, Google Go does NOT have overloading.
ie:

// Please note, the internal logics of such methods may or may be the 
same, because of dependent of business logic. Hence, functional template 
might not be needed.

class RiskAccessment{
     double calculate(NormalAccount acc, double intrest){...}
     double calculate(CurrentAccount acc, double intrest){...}
     double calculate(FixedDeposit acc, double intrest){...}
     double calculate(FixedIncome acc, double intrest){...}
     double calculate(Equity acc, double intrest){...}
     double calculate(FixedAssets acc, double intrest){...}
}
and many other such patterns.

Overriding is for entirely different thing. Hence, I suggested the 2 new 
keywords solutions.

-- 
Matthew Ong
email: ongbp at yahoo.com