C++ Archives - Page 52 of 68

enum to string in modern C++11 / C++14 / C++17 and future C++20

Contrary to all other similar questions, this question is about using the new C++ features. 2008 c Is there a simple way to ...

May 4, 2022
0 Comments

What’s the difference between “STL” and “C++ Standard Library”?

Someone brought this article to my attention that claims (I’m paraphrasing) the STL term is misused to refer to the entire C++ Standard ...

May 4, 2022
0 Comments

How does the compilation/linking process work?

How does the compilation and linking process work? (Note: This is meant to be an entry to Stack Overflow’s C++ FAQ. If you ...

May 4, 2022
0 Comments

Iteration over std::vector: unsigned vs signed index variable

What is the correct way of iterating over a vector in C++? Consider these two code fragments, this one works fine: for (unsigned ...

May 4, 2022
0 Comments

C++11 rvalues and move semantics confusion (return statement)

I’m trying to understand rvalue references and move semantics of C++11. What is the difference between these examples, and which of them is ...

May 4, 2022
0 Comments

Why does GCC generate 15-20% faster code if I optimize for size instead of speed?

I first noticed in 2009 that GCC (at least on my projects and on my machines) have the tendency to generate noticeably faster ...

May 3, 2022
0 Comments

error: passing xxx as ‘this’ argument of xxx discards qualifiers

#include <iostream> #include <set> using namespace std; class StudentT { public: int id; string name; public: StudentT(int _id, string _name) : id(_id), name(_name) ...

May 3, 2022
0 Comments

Initializing a static std::map in C++

What is the right way of initializing a static map? Do we need a static function that will initialize it? 12 s 12 ...

May 3, 2022
0 Comments

What is the difference between float and double?

I’ve read about the difference between double precision and single precision. However, in most cases, float and double seem to be interchangeable, i.e. ...

May 3, 2022
0 Comments

Static constant string (class member)

I’d like to have a private static constant for a class (in this case a shape-factory). I’d like to have something of the ...

May 3, 2022
0 Comments