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by: Job Lot |
last post by:
Is it possible to use Aggregate functions with GROUP BY Clauses on DataTable. I have a DataTable with following values:
Date Amount Int Balance
1/1/2004 5000.00 50.00 5050.00
1/1/2004 4000.00 40.00 4040.00
1/2/2004 1000.00 10.00 1010.00
1/2/2204 2000.00 20.00 2020.00
1/3/2004 1500.00 15.00 1515.00
I want my resultant DataTable to show in DataGrid as
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by: ChasW |
last post by:
given the following example:
Using gcc, this compiles, runs, and outputs as expected, but on
vc++.net 2003, the first number is always the same despite the time
seed.
#include <ctime>
#include <iostream>
using namespace std;
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by: Chris Gordon-Smith |
last post by:
I have a simulation program that calls the rand() function at various points
while it executes.
For the user interface that displays statistics etc. while the program runs,
I use the Lazarus GUI library, which is based on GTK. Depending on which
libraries I link in, I can have either a GTK1 or GTK2 user interface.
I'm finding that the simulation behaves differently depending on whether I
link with GTK1 or GTK2.
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by: Profetas |
last post by:
Hi,
I want to generate a random 8 bit number using rand(0
is that possible? to expecifu the base and the lenght?
thanks
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by: Bill Burris |
last post by:
Hi,
With VS .NET 2003 the rand() function sometimes returns a number equal to
RAND_MAX. The docs say: The rand function returns a pseudorandom integer in
the range 0 to RAND_MAX. Does this mean that 0 & RAND_MAX are included in
the range?
I am asking because I was using code from a book, which was developed on
Linux. The program occasionally dies, because the random number is used in
calculating an array index. It seems that the...
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by: Siam |
last post by:
Hi all,
I'm writing a shell language in c++ that supports the generation of
random numbers, and by its nature, each command must be executed in a
new thread. The call to the random function from my language simply
propogates up to the rand( ) function from c++. For some reason, C++
will give each thread independent use of their own rand( ) function, so
that a rand( ) call from one thread won't affect another thread's call
to rand( )....
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by: ds |
last post by:
Hi all,
rand() is not thread safe, a fact that may not be so bad after all..
However, I face the following problem: a piece of code uses rand() to
get a random sequence, but always seeds with the same seed for
reproducibility of the results. Now I am porting this (old C89) code
and have setup a nice app with threads that drives on one thread the
old code and on another the new code, so that I can compare the
results and see that nothing...
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by: Rafael Cunha de Almeida |
last post by:
Hi,
I've found several sites on google telling me that I shouldn't use
rand() % range+1
and I should, instead, use something like:
lowest+int(range*rand()/(RAND_MAX + 1.0))
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by: Rich Fife |
last post by:
Quick rand() question:
I know you're not supposed to use "rand() % 1024" for instance,
because it focuses on the lower bits. However, it seems to me that
given that the argument is not a power of two (or near a power of
two), that this is not an issue. The upper bits will participate
equally in the result with the lower. Am I missing something?
Thanks!
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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: 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: 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: 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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