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How to convert int to QString?
... within some text context, forget about + operator.
Simply do:
// Qt 5 + C++11
auto i = 13;
auto printable = QStringLiteral("My magic number is %1. That's all!").arg(i);
// Qt 5
int i = 13;
QString printable = QStringLiteral("My magic number is %1. That's all!").arg(i);
// Qt 4
int i = 1...
Difference between the Facade, Proxy, Adapter and Decorator design patterns? [closed]
...Java) simply don't allow virtual inheritance (i.e. multiple inheritance as C++ does) to allow you to accomplish this at compile time.
Since we have dragged in multiple inheritances (and the dreaded diamond) you will look out for mixins -- which are ordered linear chaining of interfaces to get arou...
How to initialize all the elements of an array to any specific value in java
In C/C++ we have memset() function which can fulfill my wish but in Java how can i initialize all the elements to a specific value? Whenever we write int[] array=new int[10]; , this simply initialize an array of size 10 having all elements equal to zero. I just want to change this initializa...
Undefined reference to pthread_create in Linux
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in eclipse
properties->c/c++Build->setting->GCC C++ linker->libraries in top part add "pthread"
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How does having a dynamic variable affect performance?
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@Roman: No. csc.exe is written in C++, and we needed something we could easily call from C#. Also, the mainline compiler has its own type objects, but we needed to be able to use Reflection type objects. We extracted the relevant portions of the C++ code from...
How can I use a search engine to search for special characters? [closed]
...ions:
Punctuation in popular terms that have particular meanings, like [ C++ ] or [ C# ] (both are names of programming languages), are not ignored.
The dollar sign ($) is used to indicate prices. [ nikon 400 ] and [ nikon $400 ] will give different results.
The hyphen - is sometimes used as a sig...
Why is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513?
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The explanation comes from Agner Fog in Optimizing software in C++ and it reduces to how data is accessed and stored in the cache.
For terms and detailed info, see the wiki entry on caching, I'm gonna narrow it down here.
A cache is organized in sets and lines. At a time, only one set ...
check if a std::vector contains a certain object? [duplicate]
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Not the answer you're looking for? Browse other questions tagged c++ vector or ask your own question.
Visual Studio 2005/2012: How to keep first curly brace on same line?
...t to change properties. Search for Clang_format_fallback Style (e.g.: for C++ C_Cpp: Clang_format_fallback Style) and change the value from Visual Studio to Google
– Riccardo Bonesi
Mar 28 '19 at 21:58
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Count immediate child div elements using jQuery
...rrect because it uses native CSS selectors, so the selection is written in C++ rather than JavaScript... Quite a performance difference. This answer is easier to understand but a lot slower.
– mdenton8
Sep 6 '13 at 22:17
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