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How to initialize const member variable in a class?
...d into many translation units. However, to avoid complicated linker rules, C++ requires that every object has a unique definition. That rule would be broken if C++ allowed in-class definition of entities that needed to be stored in memory as objects.
A const variable has to be declared within the ...
Why cast unused return values to void?
...o ensure that where necessary error codes are always handled.
I think for C++ this is probably the only place that I prefer to use C-style casts too, since using the full static cast notation just feels like overkill here. Finally, if you're reviewing a coding standard or writing one, then it's al...
Installing SciPy with pip
...te swap file if needed Error message in that case is something like this: c++: internal compiler error: Killed (program cc1plus) error: Command "c++ -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -fPIC -D__STDC_FORMAT_MACROS=1 -I/usr/lib/python2.7/dist-packages/numpy/core/include -I/u...
What is an undefined reference/unresolved external symbol error and how do I fix it?
...
Compiling a C++ program takes place in several steps, as specified by 2.2 (credits to Keith Thompson for the reference):
The precedence among the syntax rules of translation is specified by the following phases [see footnote].
Physical...
What is Ruby's double-colon `::`?
...
In C#, for instance, yes. On the other hand C++ (and Ruby) use :: for namespace resolution such as std::cout << "Hello World!";
– Jerry Fernholz
Jun 9 '10 at 20:29
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Why does intellisense and code suggestion stop working when Visual Studio is open?
...ot working, close/reopen solution
If still not working, restart VS.
For C++ projects:
MSDN has a few things to try: MSDN suggestions
The corrupt .ncb file seems most likely.
From MSDN:
Close the solution.
Delete the .ncb file.
Reopen the solution. (This creates a new .ncb file.)
Notes:
Te...
What is the printf format specifier for bool?
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If you like C++ better than C, you can try this:
#include <ios>
#include <iostream>
bool b = IsSomethingTrue();
std::cout << std::boolalpha << b;
...
What is an invariant?
...variant to that sequence.
To better understand this hope this example in C++ helps.
Consider a scenario where you have to get some values and get the total count of them in a variable called as count and add them in a variable called as sum
The invariant (again it's more like a concept):
// in...
Change C++/CLI project to another framework than 4.0 with vs2010
Since I upgraded my project to visual studio 2010 project format, my C++/CLI project is targeted to .net framework 4.0.
4 ...
Visual Studio 2012 - Intellisense sometimes disappearing / broken
...ly so VS 2005 couldn't use it and hang up while churning for 30 minutes on C++ headers.
– Jon Harbour
Mar 17 '15 at 15:22
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