What is begin...end in Erlang used for?

Question

I just stomped at a begin...end in Erlang's documentation (here), but it doesn't give some examples of how it is useful.

Looking here in StackOverflow I found two cases where people would be using begin...end, both in list comprehensions:

• https://stackoverflow.com/a/5645116/979505
• https://stackoverflow.com/a/5141263/979505

But I wonder if there are more of such uses.

Can anyone provide another scenario in which a begin...end is useful in Erlang?

Thanks

Answer 1

Macros, for example:

-define(M(A, B),
    begin
        C = foo(),
        bar(A, B, C)
    end).