> gloriefied global variable is pretty high on my BS list

Say you have a test that is asserting the output of some code, and that code is using a global variable of some kind, how do you ensure you can have tests that are using different values for that global variable and it all works? You'd need to be able to change it during tests somehow.

Personally, I think a lot of the annoying parts of programming go away when you use a more expressive language (like Clojure), including this one. But for other languages, you might need to work around the limitations of the language and then approaches like using Singletons might make more sense.

At the same time, Fowlers perspective is pretty much always in the context of "I have this piece of already written code I need to make slightly better", obviously the easy way is to not have global variables in the first place, but when working with legacy code you do stumble upon one or three non-optimal conditions.

So all global and static variables without exception are bad, therefore calling them singletons and documenting when and how to use and not use them is bad, huh?

Do you really believe that nobody would be using global variables if it weren't for Martin Fowler? Do you never use them?