xtd - Reference Guide  0.1.0
Modern c++17 framework to create console, gui and unit test applications on Windows, macOS and Linux.

§ iwstring

using xtd::iwstring = typedef immutable_basic_string<wchar_t, std::char_traits<wchar_t>>

Immutable wstring<char_t>

Remarks
It can be replaced by const std::wstring<char_t>.