[Gambas-user] How to stop "Greedy" constructors consuming parameters

[Benoît Minisini]

Le 30/04/2013 05:05, Ian Haywood a écrit :
> On 30/04/13 00:34, Benoît Minisini wrote:
>
>> If theses twwo arguments must be handled differently between classes,
>> then add a public method to handle them. Prefix its name with an
>> underscore, to indicate that it must not be called outside of the
>> implementation.
>>
>> ' Root class
>> Public Sub _new(Source as String[], Name as String)
>>     _Init(Source, Name)
>> End
>>
>> ' Any child class
>> Public Sub _Init(Source as String[], Name as String)
> This is rule around underscores enforced by the compiler (a la Python)
> or only a convention?

It's a convention used everywhere in the Gambas source code.

>
> would you consider a Protected access type (like C++) instead?
>
> Ian
>

No, I always explained that in a previous mail (don't remember which one).

I prefer using a convention, to prevent confusion on what really happens 
in the background (and keep simplicity).

"protected" in C++ is a convention enforced by the compiler, but it's 
still a public method, i.e. a method that can be called outside of a 
class (even if it is a child class).

I often saw C++ programmers that do not understand how all that klingon 
object-oriented syntax is implemented in the background. In Gambas, the 
syntax is far more... basic, but what happens is more clear (you just 
can be "public" or "private").

Regards,

-- 
Benoît Minisini