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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, it's personal preference
What is the lt;= gt; (spaceship, three-way comparison) operator in C++? 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 object that compares <0 if a < b, compares >0 if a > b, and compares ==0 if a and b are equal equivalent To write all comparisons for your type, just write operator<=> that returns the appropriate category type: Return
c++ - How do you create a static class? - Stack Overflow If you're looking for a way of applying the static keyword to a class, like you can in C# for example, then you won't be able to without using Managed C++ But the looks of your sample, you just need to create a public static method on your BitParser object Like so: BitParser h
What is the meaning of the auto keyword? - Stack Overflow auto was a keyword that C++ "inherited" from C that had been there nearly forever, but virtually never used because there were only two possible conditions: either it wasn't allowed, or else it was assumed by default The use of auto to mean a deduced type was new with C++11 At the same time, auto x = initializer deduces the type of x from the type of initializer the same way as template type
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 with an argument which is a reference to the same type) But if you want a constructor that will accept an int, you have to define it explicitly
Why are #ifndef and #define used in C++ header files? I have been seeing code like this usually in the start of header files: #ifndef HEADERFILE_H #define HEADERFILE_H And at the end of the file is #endif What is the purpose of this?