I am a C guy and I'm trying to understand some C++ code. I have the following function declaration:

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 …

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, …

itoa will be faster than the stream equivalent. There are also ways of re-using the string buffer with the itoa method (avoiding heap allocations if you are frequently generating strings. e.g. for some rapidly …

To those who are looking for speed: count and find are nearly identical in speed when using maps that require unique keys. (1) If you don't need the elements to maintain a specific order, use …

The meaning of #ifdef is that the code inside the block will be included in the compilation only if the mentioned preprocessor macro is defined. Similarly, #if means that the block will be included only if …

I want to iterate through each element in the map&lt;string, int&gt; without knowing any of its string-int values or keys. What I have so far: void output(map&lt;string, int&gt; table) { m...

I'm looking for detailed information regarding the size of basic C++ types. I know that it depends on the architecture (16 bits, 32 bits, 64 bits) and the compiler. But are there any standards for ...

Aug 19, 2015 · Is there a preferred way to return multiple values from a C++ function? For example, imagine a function that divides two integers and returns both the quotient and the remainder. One …

I'm currently using the following code to right-trim all the std::strings in my programs: std::string s; s.erase(s.find_last_not_of(&quot; \\n\\r\\t&quot;) + 1); It works fine, but I wonder if there ...