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streams are cool, you could stream virtually anything!

From: Nicolas Petton
Subject: streams are cool, you could stream virtually anything!
Date: Wed, 04 Nov 2015 13:39:02 +0100
User-agent: Notmuch/0.20.2 (http://notmuchmail.org) Emacs/ (x86_64-unknown-linux-gnu)

Hi guys,

Aren't you tired of writing the same for loops in various contexts?
I know I was, and there's a better way!

I just added a function `stream-regexp' to stream.el to stream the
search of a regexp in a buffer:

    (let ((str (stream-regexp buf ".*foo\\(.*\\)$")))
      (seq-map (lambda (match-data)

(I still have to document it and test it properly)

Because streams are lazy and immutable, you can reuse such a stream
forever or keep it for later, move around in a buffer or modify the
buffer and re-evaluate the stream (you'll get new match data), or map
the result, etc.

All the credit goes to Damien Cassou for giving me the idea :-)


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