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by: Alfred E Neuman |
last post by:
I've read that... AClass ac = AClass( "name", 23 );
is less efficient than... AClass ac( "name", 23 );
because the first has to create a temporary object which is then
assigned to ac.
However, I can't seem to prove this true. I've created a class
containing the following constructors and overloaded equal operator.
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by: Dmitry Denisenkov |
last post by:
Hi,
I recently found out that in std::string a("some text"),
a.length()==a.size(). Does that mean that c++ strings are, unlike c strings,
NOT terminated by char(0)? For some reason I used to think that they are.
~Dmitry
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by: Erik Wikström |
last post by:
First of all, forgive me if this is the wrong place to ask this question,
if it's a stupid question (it's my second week with C++), or if this is
answered some place else (I've searched but not found anything).
Here's the problem, I have two sets of files, the name of a file contains a
number which is unique for each set but it's possible (even probable) that
two files in different sets have the same numbers. I want to store these...
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by: yezi |
last post by:
Hi:
I want to break a string like "30 23 date" into 3 parts in C:
int 30;
int 23;
char string date;
Do not know how to get it.
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by: bnob |
last post by:
My regional setting is "yy-MM-dd" for the date
But for my application I have to use the format date "dd/MM/yyyy"
I convert the date to dd/MM/yyyy with this code :
m_curSel.ToString("dd/MM/yyyy")
But I have error : "Cast of the string "23-12-2004" in type Date is non
valide"
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by: Assimalyst |
last post by:
Hi,
I have a working script that converts a dd/mm/yyyy text box date entry
to yyyy/mm/dd and compares it to the current date, giving an error
through an asp.net custom validator, it is as follows:
function doDateCheckNow(source, args)
{
var oDate = document.getElementById(source.controltovalidate); //
dd/mm/yyyy
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by: weirdwoolly |
last post by:
Hopefully someone will be able to help.
I have written a stored procedure in C++ called from a Java test
harness to validate the graphic data types in C++ and their use.
I have declared the vargraphic input parameters along the following
lines
in i_vargraphic100 vargraphic(100)
and they are populated from String's in java.
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by: Jim |
last post by:
Hi guys,
The variable '$pixels' in the code below may be an integer type or an
integer represented as a string type. I need to check if the value is
indeed one of these. Is the following code the simplest I can get?
if (!is_int($pixels) && !ctype_digit($pixels))
{
// some code
}
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by: jk2l |
last post by:
Error 10 error LNK2019: unresolved external symbol __imp__glBindTexture@8 referenced in function "public: void __thiscall GLTexture::Use(void)" (?Use@GLTexture@@QAEXXZ) GLTexture.obj
Error 11 error LNK2019: unresolved external symbol __imp__glEnable@4 referenced in function "public: void __thiscall GLTexture::Use(void)" (?Use@GLTexture@@QAEXXZ) GLTexture.obj
Error 12 error LNK2001: unresolved external symbol __imp__glEnable@4 Model_3DS.obj ...
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by: John |
last post by:
Hi
Can I have an array of type OleDb.OleDbConnection that has strings as
subscription values? The reason I need this is my app reads a configuration
file with db names and their locations and it then creates all connections
and if subscript is the db name as string then it is easy for the app to
figure out which db is which and to link it with other db settings in the
configuration file.
Thanks
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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: 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: 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: 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: 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: 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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