Re: mixing argument types

[Emanuel Berg]

Rodolfo Medina wrote:

> What does `A' stand for...? And foo and
> bar...? And region-beginning/end...?

A and B doesn't stand for anything in
particular, but it can stand for a lot of
things, anything that fits. Likewise with foo
and bar: programmers use them sort of like
x and y in algebra, but not in exactly the same
way, more like telling "don't mind us, this
piece of code is carrying some other point
across, only formally, without us, it won't
work".

Sometimes foo and bar make their way into real
software, because people forget to replace them
after first being lazy failing to come up with
a name that describes what is happening. It is
most often better not to use them at all when
writing real programs.

Here, we use it as a way to describe the
mechanism of a function and its arguments, i.e.
the function itself, without any connections to
what it would do in a real program in the
real world.

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