Why is immutable not possible as a result of a reduce expression?

[Andrej Mitrovic]

On 1/6/13, Jonathan M Davis <jmdavisProg at gmx.com> wrote:
> In D, the term storage class is used for pretty much any attribute on a
> variable which is not a type constructor

This topic pops up in the newsgroups every once in a while[1]. Maybe
we should properly document it in the docs, a special section on
storage class vs type qualifier (or type constructor or whatever it's
called).

There is documentation for function parameter storage classes[2], but
that's about it.

1: http://www.digitalmars.com/d/archives/digitalmars/D/Definitive_list_of_storage_classes_164063.html
2: http://dlang.org/function.html#parameters