[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: org-mode functional programming library
From: |
Adam Porter |
Subject: |
Re: org-mode functional programming library |
Date: |
Tue, 04 Feb 2020 01:43:20 -0600 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux) |
Nicolas Goaziou <address@hidden> writes:
> Note that, at some point, Org will support "seq.el", i.e., when we
> drop support for Emacs 24.
Just a small FYI about seq.el, for those who may not be aware: while
it's a very useful library, it can be quite slow since it uses generics.
For example, here are some benchmarks comparing seq-intersection with
other functions that intersect lists:
https://gist.github.com/alphapapa/36b117c178dec677258f372c3a01d8b5
Note the last benchmark listed, which shows that cl-intersection is
about 2x as fast as seq-intersection. As well, dash.el's -intersection
is about 17x faster than seq-intersection.
So while seq.el will undoubtedly be useful in Org, it should be used
carefully with regard to performance. Type-specific functions will
generally be much faster. And as long as dash.el can't be used in Org
proper, a custom implementation may be called for at times.