[dexen]

Thanks for explanations; now it makes sense to me.

Another question: is there built-in support, or an idiom or standard practice for unwinding multiple levels of stack? Is it possible to have handler code is not directly in the function that called, but somewhere lower on the call stack -- and have it reached automatically like an exception does?

Btw., it seems the bolder statement I post to HN, the wronger it turns out to be... oh, boy XD

[masklinn]

> Another question: is there built-in support, or an idiom or standard practice for unwinding multiple levels of stack? Is it possible to have handler code is not directly in the function that called, but somewhere lower on the call stack -- and have it reached automatically like an exception does?

Not that I know, but I am very much a haskell novice. You may want to ask for further information in /r/haskell, on reddit.