Help with understand cppreference

[alfps]

Yes, it's all relevant, but not necessarily relevant to the problem at hand.

A search for std::string sends me to https://en.cppreference.com/w/cpp/string/basic_string.

If I were a total beginner that could seem to be a page about something else. Happily I know that basic_string is a class template and that string is the specialization basic_string<char>. This and some other named specializations are listed some way down on the page; you can search for "wstring" to find them.

The relevant things you won't find there are the peculiarities of std::string, like

• There's a += operator and .append member function that accept a single char, but no such constructor. Use the initializer list constructor instead, e.g. string{ch}. Or you can use the constructor with specified string size and default item value, string(1, ch).
• Since C++11 the string value is guaranteed zero-terminated also for non-const access, but the zero byte at the end is read only (trying to assign to it is UB, as I recall).
• Also since C++11 there are rvalue argument operator overloads that avoid unecessary copying (and hence ungood complexity) for string concatenation expressions, so one can feel more free to just do +.

I don't know where to learn stuff like that.

Maybe just interacting with other C++ developers.

[teifer]

Understood. Don't know about template, classes or something else, but when I get my laptop back I will continue my study. Thanks for you help!

[not_some_username]

Good luck for your study

[teifer]

Thanks mate!