This installment of Embed with Elliot begins with a crazy rant. If you want to read the next couple of paragraphs out loud to yourself with something like an American-accented Dave-Jones-of-EEVBlog ...

So I've used <I>plenty</I> of STL functions which takes functors as parameters. For calculating set differences, for sorting vectors, etc. I'm in a situation where I'd like to write such a function ...