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by: Mike Meng |
last post by:
hi all,
I'm a newbie Python programmer with a C++ brain inside. I have a
lightweight framework in which I design a base class and expect user to
extend. In other part of the framework, I heavily use the instance of
this base class (or its children class). How can I ensure the instance
IS-A base class instance, since Python is a fully dynamic typing
language?
I searched and found several different ways to do this:
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by: Patchwork |
last post by:
Hi Everyone,
Please take a look at the following (simple and fun) program:
////////////////////////////////////////////////////////////////////////////
/////////////
// Monster Munch, example program
#include <list>
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by: Leslaw Bieniasz |
last post by:
Cracow, 20.10.2004
Hello,
As far as I understand, the generic programming basically consists
in using templates for achieving a static polymorphism of the
various code fragments, and their reuse for various template
parameters. I wonder if there exist techniques for achieving
a dynamic polymorphism using the generic programming. Is this
possible? If yes, can anyone show me simple examples in C++
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by: E. Robert Tisdale |
last post by:
polymorph just means "many form(s)".
The definition in plain English
http://www.bartleby.com/61/66/P0426600.html
and narrower definitions in the context of computer programming
http://en.wikipedia.org/wiki/Polymorphism
http://wombat.doc.ic.ac.uk/foldoc/foldoc.cgi?query=polymorphism&action=Search
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by: Jason Curl |
last post by:
Greetings,
I have an array of 32 values. This makes it extremely fast to access
elements in this array based on an index provided by a separate enum. This
array is defined of type "unsigned long int". I have a typedef for this:
typedef unsigned long int Uint32;
typedef float Float32;
Uint32 myArray;
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by: Fao |
last post by:
Hello, I am having some problems with inheritance. The compiler does
not not return any error messages, but when I execute the program, it
only allows me to enter the number, but nothing else happend. I think
the problem may be in my input function or in the main function.
If anyone out there can help me it woul be greatly appreciated.
Here is the code:
#include <iostream>
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by: Seigfried |
last post by:
I have to write a paper about object oriented programming and I'm doing
some reading to make sure I understand it. In a book I'm reading,
however, polymorphism is defined as:
"the ability of two different objects to respond to the same request
message in their own unique way"
I thought that it was:
"the ability of same object to respond to different messages in
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by: Jack |
last post by:
I have a class called "Base". This class has a protected member
variable "m_base" which can be retrieved using the public member
function "GetBaseMember". "m_base" is initialized to "1" and is never
changed.
I have another class which is a subclass of the "Base" class called
"Derived". This derived class has a member variable called
"m_derived". "m_derived" is initialized to "2" and is never changed.
I pass an array of "Base" classes...
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by: chsalvia |
last post by:
I've been programming in C++ for a little over 2 years, and I still
find myself wondering when I should use polymorphism.
Some people claim that polymorphism is such an integral part of C++,
that anybody who doesn't use it might as well just program in plain
C. I totally disagree with this, because I think C++ has a lot of
great features apart from polymorphism, such as the ability to
organize code into classes, code reuse through...
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by: feel |
last post by:
Hi,All
I am sure it's an old question. But I just find a interesting design
about this: Polymorphism without virtual function in a C++ class.
My solution is for some special case, trust me, very special.
1 single root class tree
2 the leaf(lowest level) classes are sealed which means we should not
inherite class from them.
3 PImpl idiom. There is only one data mumber in root class and there
is no any other data mumber in child class and...
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by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
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by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
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by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
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by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
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by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
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by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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by: bsmnconsultancy |
last post by:
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