by: Christian Dieterich |
last post by:
Hi,
I need to create many instances of a class D that inherits from a class
B. Since the constructor of B is expensive I'd like to execute it only
if it's really unavoidable. Below is an example...
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by: Hanzo |
last post by:
I'm currently fighting my way through an example of Single-Threaded
Memory Pooling in a chapter of the Efficient C++ book by Dov Bulka &
David Mayhew. Unfortuantely, I'm starting to get code that...
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by: xuatla |
last post by:
Hi,
I encountered the following compile error of c++ and hope to get your help.
test2.cpp: In member function `CTest CTest::operator+=(CTest&)':
test2.cpp:79: error: no match for 'operator='...
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by: Fiber Optic |
last post by:
I wrote a sample app to test using a function to obtain friend-level
access to a templated class. However, I am getting similar errors from
two separate compilers.
If anyone can recommend what...
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by: Mike |
last post by:
Please help this is driving me nuts. I have 2 forms, 1 user class and I am
trying to implement a singleton class. Form 1 should create a user object
and populate some properties in user. Form2...
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by: ThazKool |
last post by:
Is there anyway to write a class or struct that has no storage. It
only operates on a reference to an already existing type.
This is actually an extension to another thread. The thread went a...
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by: Graham |
last post by:
This has to do with class variables and instances variables.
Given the following:
<code>
class _class:
var = 0
#rest of the class
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by: Richard |
last post by:
I have a requirement to put a GDI style circle or rectangle border around
the selected row of a datagrid/ It will overlap into the row above and below
the selected row. Doing this in a the OnPaint...
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by: stromhau |
last post by:
Hi,
I have made a few classes in c++. They somehow cooperate doing some 3d stuff.
Basically it is a moving camera acting as a flight, i have placed a lot of objects around the scene together with...
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by: mast2as |
last post by:
Hi everyone
I am working on some code that uses colors. Until recently this code
used colors represented a tree floats (RGB format) but recently changed
so colors are now defined as spectrum....
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by: DolphinDB |
last post by:
The formulas of 101 quantitative trading alphas used by WorldQuant were presented in the paper 101 Formulaic Alphas. However, some formulas are complex, leading to challenges in calculation.
Take...
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by: DolphinDB |
last post by:
Tired of spending countless mintues downsampling your data? Look no further!
In this article, you’ll learn how to efficiently downsample 6.48 billion high-frequency records to 61 million...
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by: ryjfgjl |
last post by:
ExcelToDatabase: batch import excel into database automatically...
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by: Vimpel783 |
last post by:
Hello!
Guys, I found this code on the Internet, but I need to modify it a little. It works well, the problem is this: Data is sent from only one cell, in this case B5, but it is necessary that data...
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by: ArrayDB |
last post by:
The error message I've encountered is; ERROR:root:Error generating model response: exception: access violation writing 0x0000000000005140, which seems to be indicative of an access violation...
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by: PapaRatzi |
last post by:
Hello,
I am teaching myself MS Access forms design and Visual Basic. I've created a table to capture a list of Top 30 singles and forms to capture new entries. The final step is a form (unbound)...
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by: Defcon1945 |
last post by:
I'm trying to learn Python using Pycharm but import shutil doesn't work
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by: Shællîpôpï 09 |
last post by:
If u are using a keypad phone, how do u turn on JavaScript, to access features like WhatsApp, Facebook, Instagram....
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by: af34tf |
last post by:
Hi Guys, I have a domain whose name is BytesLimited.com, and I want to sell it. Does anyone know about platforms that allow me to list my domain in auction for free. Thank you
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