What is the meaning of prepended double colon - Stack Overflow
I found this line of a code in a class which I have to modify: ::Configuration * tmpCo = m_configurationDB;//pointer to current db and I don't know what exactly means the double colon …
c++ - Difference between | and || , or & and && - Stack Overflow
Dec 28, 2015 · Closed 9 years ago. These are two simple samples in C++ written on Dev-cpp C++ 5.4.2:
c++ - How do you loop through a std::map? - Stack Overflow
You'll need to complete a few actions and gain 15 reputation points before being able to upvote. Upvoting indicates when questions and answers are useful. What's reputation and how do I get it? …
What is the C++ function to raise a number to a power?
In C++ the "^" operator is a bitwise XOR. It does not work for raising to a power. The x << n is a left shift of the binary number which is the same as multiplying x by 2 n number of times and that can only be …
Regular cast vs. static_cast vs. dynamic_cast - Stack Overflow
Aug 26, 2008 · I've been writing C and C++ code for almost twenty years, but there's one aspect of these languages that I've never really understood. I've obviously used regular casts i.e. MyClass *m …
c++ faq - When do I use a dot, arrow, or double colon to refer to ...
Feb 13, 2011 · The three distinct operators C++ uses to access the members of a class or class object, namely the double colon ::, the dot ., and the arrow ->, are used for three different scenarios that are …
Storing C++ template function definitions in a .CPP file
Separation of implementation details (aka definitions in foo.cpp) from which versions are actually compiled (in foo-impl.cpp) and declarations (in foo.h). I dislike that most C++ templates are defined …
How to use the PI constant in C++ - Stack Overflow
Nov 13, 2009 · I want to use the PI constant and trigonometric functions in some C++ program. I get the trigonometric functions with include <math.h>. However, there doesn't seem to be a definition for …
c++ - How can I trim a std::string? - Stack Overflow
} // The remaining functions (trim() et al.) are identical to the new C++11 version std::ptr_fun is needed to disambiguate std::isspace because there is a second definition which supports locales. This could …
C++ code file extension? What is the difference between .cc and .cpp
95 .cpp is the recommended extension for C++ as far as I know. Some people even recommend using .hpp for C++ headers, just to differentiate from C. Although the compiler doesn't care what you do, …