[isidor3]

The most "complicated" part about operator overloading (in my opinion) is dealing with precedence rules. Some languages, instead of dealing with this complexity, treat all operators the same. Lisp-like languages, for instance, by way of how the programs are structured, doesn't need rules for precedence. APL/J just does away with any idea of precedence and instead each operator acts on the result of the expression to its right. This breaks common arithmetic rules (2 * 2 + 2 evaluates to 8, for example), but I wonder if a language otherwise like C/C#/Java ditched precedence and allowed custom and overridable operators, if the result would be a lot less complex overall than some of the messes that can be found in C++.