Incorrect behaviour of size() and at() in string class
c++
Solution
`std::string` on non-Windows is usually used to store UTF8 strings (being the default encoding on most sane operating systems this side of 2010), but it is a "dumb" container that in the sense that it doesn't know or care anything about the bytes you're storing. It'll work for reading, storing, and writing; but not for string manipulation.
You need to use the excellent and well-maintained IBM ICU: International Components for Unicode. It's a C/C++ library for *nix or Windows into which a ton of research has gone to provide a culture-aware string library, including case-insensitive string comparison that's both fast and accurate.
Another good project that's easier to switch to for C++ devs is UTF8-CPP
Problem
I've got this code: ``` string test("żaba"); cout << "Word: " << test << endl; cout << "Length: " << test.size() << endl; cout << "Letter: " << test.at(0) << endl; ``` The output is strange: ``` Word: żaba Length: 5 Letter: � ``` As you can see, length should be 4 and letter: "ż". How can I correct this code to work properly?