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Possible Duplicates:
virtual inheritance
In C++ virtual base class?
Diamond inheritance (C++)
What is the difference between virtual inheritance and non-virtual inheritance in C++. I'm studying for a final and cant seem to find a clear, definitive answer...
Answer Snippets (Read the full thread at stackoverflow):
Non-virtual inheritance is slightly cheaper and adequate if only single inheritance....
inheritance (virtual base classes) is needed to make multiple inheritance work properly when inheriting from multiple classes with a common base.
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I'm trying to do some class inheritance in Python. I'd like each class and inherited class to have good docstrings. So I think for the inherited class, I'd like it to:
inherit the base class docstring also append relevant extra documentation to the docstring...
Started by Craig McQueen on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
""" doc_inherit decorator Usage: class Foo(object): def foo(self): "Frobber" pass class Bar(Foo): @doc_inherit def foo(self): pass Now, Bar.foo.__doc__ == Bar' in parents"%self.name) func._....
Check it out here.
And a recipe was created.
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Why prefer composition over inheritance? What trade-offs are there for each approach? When should you choose inheritance over composition?
Started by Readonly on
, 18 posts
by 18 people.
Answer Snippets (Read the full thread at stackoverflow):
If you need to model substitutability....
It also covers the exceptions to this rule: when you should use inheritance i.e.
Chapter 34 ("Prefer composition to inheritance") of "C++ Coding Standards" by Sutter/Alexandrescu to minimizing coupling.
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A subjective question, hence if there are complaints I'll wiki, but I'd like to know what people's takes are on the different terms that are used for inheritance almost interchangeably.
We have "is-a", "extends", "derives", "subclasses" and simply "inherits...
Started by bobobobo on
, 10 posts
by 10 people.
Answer Snippets (Read the full thread at stackoverflow):
"IS-A" is a relationship constraint that inheritance must respect inheritance, interface....
So i prefer IS A
I most often uses to be a bit of a stretch, for some reason .
Is a mammal) relationship, then they are bound by inheritance.
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Is the multiple inheritance in Java and Perl the same?
Started by joe on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
Perl doesn't have interfaces, and Java only allows multiple inheritance through interfaces.....
Only single-inheritance is allowed for implementation.
Don't know about Perl, but Java only allows multiple inheritance of interface.
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What languages support multiple inheritance and what techniques do they use to mitigate the problems that arise from using multiple inheritance?
Answer Snippets (Read the full thread at stackoverflow):
See the reference for....
Http://en.wikipedia.org/wiki/Multiple_inheritance
From Wikpedia at time of posting (language, various - also, order of inheritance affects outcome Python, similar to Perl, but encoded use multiple inheritance.
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Why protected and private inheritance are defined and proposed? I understand some cases private inheritance could be used but it is not recommended. How about protected inheritance?
Can anyone offer me an situation in which protected inheritance is a ...
Started by skydoor on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
Protected inheritance can also be used don't use protected inheritance....
Private inheritance is usually used for mixins---where people inherit to get functionality from the base class, rather than because of "is-a" inheritance.
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There's lots of articles and posts explaining how JavaScript inheritance works, but I'm curious why JavaScript was implemented using prototypal inheritance instead of classical inheritance. I love JavaScript so I'm not saying it's bad thing... I'm just...
Started by nickyt on
, 7 posts
by 7 people.
Answer Snippets (Read the full thread at stackoverflow):
The main advantages of class based inheritance are that it allows static typing and thus type checking and a faster table based lookup with something like protypal inheritance....
It's a natural choice for a untyped language.
Based inheritance.
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Possible Duplicate:
Diamond inheritance (C++)
i know it is possible for diamond inheritance to exist in C++ but i can’t seem to get it to work, any ideas?
Started by Euclid on
, 6 posts
by 6 people.
Answer Snippets (Read the full thread at stackoverflow):
I'm not sure what you mean by "work." If all you want is a simple example of diamond inheritance, here you go now has two copies of class A in its inheritance....
Hope this helps.
This question was posed on SO before: Diamond Inheritance (C++) .
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This may be a silly question but I want the exact idea about inheritance in c#.
Started by Aarti on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
For instance you can inherit from only one base class but yetThis link covers on how you use inheritance: http://msdn.microsoft.com/en-us/library/ms173149(VS.80).aspx
inheritance in C#....
Lies in how inheritance works in c#.
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