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by: Jean-Claude Arbaut |
last post by:
When you realloc for more size, it may be necessary to allocate a new block,
copy memory and deallocate the old, for example if there is not enough free
space after the original block (maybe the only example ?). But, is it really
necessary to _copy_ bytes ? When in a virtual memory environment (off-topic
here, be I still think the question is worth), you don't access directly
physical memory, but allocated pages, so would it be possible on...
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by: JonZ |
last post by:
I want to declare a local copy of an object so I can modify the local
version without affecting the original copy. But when I update my local copy,
the original object changes, too.
My original object is a collection I’ve defined. I started with a class
definition:
Public Class MyClassDef
Inherits System.Collections.CollectionBase
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by: Mark E. Fenner |
last post by:
Hello all,
I have a code where my inner loop looks like:
allNew =
for params in cases:
newObj = copy(initialObject)
newObj.modify(params)
allNew.append(newObj)
return allNew
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by: ivan.leben |
last post by:
Let's say I have a piece of allocated memory which I want to expand and
reuse if possible or allocate in a different part of RAM if resizing is
not possible, however, in the latter case I don't care about the old
data and I don't need to copy it to the new location. Is there a
standard function that could do that? As far as I understand the
description of the realloc() function, it _always_ copies the data to
the new location, even if that...
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by: jacobstr |
last post by:
I've noticed Object.extend used in a few different ways and I'm having
trouble distinguishing why certain usages apply to a given situation.
On line 804 Ajax.Base is defined as follows:
Ajax.Base = function() {};
Ajax.Base.prototype = {
setOptions: function(options) { <...>
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by: Marijn |
last post by:
Hello everybody,
I am new to PHP and working on extending my knowledge of OOP. The
posts in this group concerned with whether or not to use an OO
approach when programming in PHP is not what I want to discuss in this
post. Rather I would like to discuss the best way to program the
following problem:
I have a MySQL Database which for example exists of phonenumbers. The
table might look something like this.
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by: jidixuelang |
last post by:
As I know,it's not well to extend Object.prototype derictly.
In the Prototype(JS Framewoke),there is no extend Object.prototype.
It only add some static method for Object class.
I want to konw the reason.Who can give me some advise!?
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by: jacek.dziedzic |
last post by:
Hello!
Suppose I have a class base, with virtual methods and a virtual
destructor and a bunch of classes,
derived1, derived2, ... which publicly derive from base. I then have a
pointer
base* foo;
which a complicated code allocates as one of derived's and sets up.
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by: Anand |
last post by:
I am trying to implement some kind of object inheritance. Just like
one class can extend from another, I want to do the same on objects
dynamically.
I just thought that I can share my excitement here.
Suppose there are classes A and B and their instances a and b.
class A:
def foo(self): self.say('foo')
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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: 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: 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: 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: 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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