What does '&' do in a C++ declaration? - Stack Overflow
I am a C guy and I'm trying to understand some C++ code. I have the following function declaration:
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, …
What does the "::" mean in C++? - Stack Overflow
Mar 17, 2011 · What does this symbol mean? AirlineTicket::AirlineTicket ()@PaulR Not everyone who arrives upon this question is looking to learn C++. I, for example, just happened to be skimming …
Storing C++ template function definitions in a .CPP file
I have some template code that I would prefer to have stored in a CPP file instead of inline in the header. I know this can be done as long as you know which template types will be used. For exam...
What is the <=> ("spaceship", three-way comparison) operator in C++?
Nov 24, 2017 · This is called the three-way comparison operator. According to the P0515 paper proposal: There’s a new three-way comparison operator, <=>. The expression a <=> b returns an …
c++ - #include in .h or .c / .cpp? - Stack Overflow
Jun 9, 2010 · 20 Put as many includes in your cpp as possible and only the ones that are needed by the hpp file in the hpp. I believe this will help to speed up compilation, as hpp files will be cross …
c++ - What does the explicit keyword mean? - Stack Overflow
33 Cpp Reference is always helpful!!! Details about explicit specifier can be found here. You may need to look at implicit conversions and copy-initialization too. Quick look The explicit specifier specifies …
c++ - Inheriting constructors - Stack Overflow
Constructors are not inherited. They are called implicitly or explicitly by the child constructor. The compiler creates a default constructor (one with no arguments) and a default copy constructor (one …
How do I fix the error "was not declared in this scope"?
This is similar to how one would write a prototype for functions in a header file and then define the functions in a .cpp file. A function prototype is a function without a body and lets the compiler know …
Differences between C++ string == and compare()? - Stack Overflow
It should be noted that == isn't going to work for you in every case. string overloads the operator to perform a compare, so == is the same as calling a compare. Alternatively, if you try this on objects …