Because my time is limited and I would like to know why I should spend time evaluating it, instead of using a battle tested library that exists since late 90&#x27;s and that follows modern C++.<p>If the OP only wants to learn how to do it, or to build its portfolio for a possible job interview, it is fair enough and I don&#x27;t need to bother with it.<p>If the author wants to do a kick-ass replacement of libsigc++, then it is probably worth my expensive time to look into it.