- What is your evaluation of the design? It's very clean. While I'm not a big fan of the macros, I do like how it's somewhat reminiscent of vanilla C++ exceptions. Some minor nit-picking here: trailing underscores following names that are public doesn't look particularly right; makes it look like you're using you aren't supposed to :) - What is your evaluation of the documentation? The documentation is great -- in terms of styles it's probably the best I've seen for a C++ library. The examples are great and they do a good job of communicating how the library works by providing realistic scenarios. It's quite well done. - What is your evaluation of the potential usefulness of the library? While this is not something I have found a need for, the motivation for this libraries existence is weill founded and I can see use cases for it. - Did you try to use the library? With which compiler(s)? Did you have any problems? I did not. - How much effort did you put into your evaluation? A glance? A quick reading? In-depth study? I spent about an hour going through the documentation. - Are you knowledgeable about the problem domain? Not really :) In terms of acceptance, I'm neutral on that front as this is not something I am well versed in.