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by: AIM |
last post by:
Error in msvc in building inheritance.obj to build hello.pyd
Hello,
I am trying to build the boost 1.31.0 sample extension hello.cpp.
I can not compile the file inheritance.cpp because the two
files containing some templates: adjacency_list.hpp and mem_fn.hpp can
not compile.
Does anyone have any solutions?
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by: Graham Banks |
last post by:
Does using multiple inheritance introduce any more performance overhead than
single inheritance?
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by: JKop |
last post by:
I'm starting to think that whenever you derive one class from another, that
you should use virtual inheritance *all* the time, unless you have an
explicit reason not to. I'm even thinking that there shouldn't have been a
"virtual" keyword for this purpose, but instead, a "nonvirtual" keyword!
In teaching inheritance, you see the common example:
class Vehicle {}
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by: Morgan Cheng |
last post by:
It seems no pattern defined by GoF takes advantage of multiple
inheritance. I am wondering if there is a situation where multiple
inheritance is a necessary solution.
When coding in C++, should multiple inheritance still be avoided?
If yes, why multiple inheritance is introducted into C++?
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by: davidrubin |
last post by:
Structural inheritance (inheriting implementation) is equivalent to
composition in that a particular method must either call 'Base::foo' or
invoke 'base.foo'. Apparantly, The Literature tells us to prefer
composition over inheritance. Can anyone provide some reasons why this
is the case (based on "real-world" experience)? For example, is
structural inheritance more difficult to maintain? More difficult to
test? Have a larger impact on...
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by: Steve Jorgensen |
last post by:
Recently, I tried and did a poor job explaining an idea I've had for handling
a particular case of implementation inheritance that would be easy and obvious
in a fully OOP language, but is not at all obvious in VBA which lacks
inheritance. I'm trying the explanation again now.
I often find cases where a limited form of inheritance would eliminate
duplication my code that seems impossible to eliminate otherwise. I'm getting
very...
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by: Matthew Louden |
last post by:
I want to know why C# doesnt support multiple inheritance? But why we can
inherit multiple interfaces instead? I know this is the rule, but I dont
understand why. Can anyone give me some concrete examples?
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by: Ben Blank |
last post by:
I'm writing a family of classes which all inherit most of their methods and
code (including constructors) from a single base class. When attempting to
instance one of the derived classes using parameters, I get CS1501 (no method
with X arguments). Here's a simplified example which mimics the
circumstances:
namespace InheritError {
// Random base class.
public class A {
protected int i;
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by: Shawnk |
last post by:
Some Sr. colleges and I have had an on going discussion relative to when and
if
C# will ever support 'true' multiple inheritance.
Relevant to this, I wanted to query the C# community (the 'target' programming
community herein) to get some community input and verify (or not) the
following
two statements.
Few programmers (3 to7%) UNDERSTAND 'Strategic Functional Migration
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by: Bart Simpson |
last post by:
I remember reading on parashift recently, that "Composition is for code
reuse, inheritance is for flexibility" see
(http://www.parashift.com/c++-faq-lite/smalltalk.html#faq-30.4)
This confused me somewhat as I have always thought you get code reuse
"for free" with inheritance. Am I missing something?. Will someone care
to explain ??
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by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
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by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
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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: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
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by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
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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: 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:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
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