Re: Streams: add stream-delay and streams of directory files

[Michael Heerdegen <michael_heerdegen@web.de>]

Artur Malabarba <bruce.connor.am@gmail.com> writes:

> Sorry if this is a silly question, but isn't stream-delay just
> reimplementing thunk.el (the functionality that stream itself is
> built-on)?

Yes, that's a very congruous question.

Let me add to Nicolas comment:

The semantics is very similar to that of `thunk-delay', and it serves
the same purpose at the end: delaying an expression.  The idea behind
`stream-delay' was to transfer the idea of delaying to the level of
streams:

`stream-delay' takes an expression E that must (later) evaluate to a
stream S, and returns another stream S' (and not a thunk).  And unlike
`thunk-delay', when referencing an element of S', E is _implicitly_
evaluated to get S.

I just defined that because it made sense for defining
`stream-of-directory-files'.  Maybe you have a nicer idea for reaching
the same goal...?


Regards,

Michael.