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by: dan |
last post by:
without stirring the pot too much --
could someone please point me to whatever documentation exists on the
philosophy, semantics, and practical implications of how Python
implements the assignment operator? So far I can't find much useful
in the regular documentation. I understand the basic concept that
names are bound to objects which exist on the heap, but that still
doesn't explain why a = b doesn't _always_ cause a to point to the...
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by: Tony Johansson |
last post by:
Hello!
I'm reading in a book about C++ and that is something that sound strange.
It says "Pointers have reference-assignment semantics similar to those in
Java. For example, after the assignment
Student* john = michael;
both john and michael share the same object. This type of an assignment is
different then value-assignmnet semantics used by class variables, as in
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by: Alex |
last post by:
Entering the following in the Python shell yields
>>> help(dict.copy)
Help on method_descriptor:
copy(...)
D.copy() -> a shallow copy of D
>>>
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by: bonk |
last post by:
I have come across the need to distinguish between the creation of a
deep and a shallow copy and with great interest I have read this
article:
http://blogs.msdn.com/brada/archive/2004/05/03/125427.aspx
This artivle seems to hint that I should not use System.IClonable but
instead define my own interface(s) for cloning. Now since this article
is rather old and since they did not obsolete IClonable there might be
a new "best practise".
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by: saxenavaibhav17 |
last post by:
what is Deep Copy, Shallow copy and Bitwise copy, Memberwise copy?
and what is the difference between them?
pls help
vaibhav
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by: pauldepstein |
last post by:
I recently had a job interview question which I totally failed. (The
question seemed excellent from an objective point of view, but having
completely failed to do it, my subjective feelings are different.)
It's hard for me to recall the question exactly. But basically, it
involved a class construction with a shallow copy constructor.
The question was basically "What is the bug in this code?" The
intended answer was that shallow...
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by: blangela |
last post by:
I have decided (see earlier post) to paste my Word doc here so that it
will be simpler for people to provide feedback (by directly inserting
their comments in the post). I will post it in 3 parts to make it more
manageable.
Below is a draft of a document that I plan to give to my introductory
C++ class.
Please note that I have purposely left out any mention of safety issues
in the ctors which could be resolved thru some combination...
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by: blangela |
last post by:
3.0 Advanced Topic Addendum
There are a few cases where the C++ compiler cannot provide an
overloaded assignment operator for your class. If your class contains
a const member or/and a reference member, the compiler will not be able
to synthesize an assignment operator for your class. It actually helps
to think of a reference member as a const member (since it cannot be
made to reference any other object once it has been initialized).
...
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by: shuisheng |
last post by:
Dear All,
Is there any easy way to make sure all my object copies are deep copy
or shallow copy? I do not like to implement it in each class one by
one.
Thanks,
Shuisheng
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by: raylopez99 |
last post by:
The "C# Cookbook" (O'Reilly / Jay Hilyard), section 3.26, is on deep
cloning versus shallow cloning. The scanned pages of this book are
found here: http://www.sendspace.com/file/mjyocg (Word format, 3 pp)
My question, coming from a C++ background where deep copying is done,
is why in C# you would do either deep or shallow copying as suggested
by O'Reilly (using the "ICloneable" inhereited interface), at least
for the .NET framework.
...
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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: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
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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: 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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