What one could do besides attributes is to have functions just for use by the debugger. Like an integrated debug interface. Anything similar already out there for C++? Other languages: Elixir Inspect protocol https://hexdocs.pm/elixir/Inspect.html Rust: #[derive(Debug)] attribute https://doc.rust-lang.org/rust-by-example/hello/print/print_debug.html Julia: overloading Base.show member function https://docs.julialang.org/en/v1/manual/types/#man-custom-pretty-printing C# DebuggerDisplay attribute https://learn.microsoft.com/en-us/visualstudio/debugger/using-the-debuggerdisplay-attribute?view=vs-2022 Python: __repr__ member function https://docs.python.org/3/library/functions.html#repr -----Ursprüngliche Nachricht----- Von:Henning Meyer via Std-Proposals <std-proposals_at_[hidden]> - For ranges, the language has a way of marking them, that is via begin()/end() methods or free functions.