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rfc: (ice-9 accumulate)
From: |
Thien-Thi Nguyen |
Subject: |
rfc: (ice-9 accumulate) |
Date: |
Sat, 09 Jan 2010 11:44:03 +0100 |
Would there be any interest in adding (ice-9 accumulate) to Guile?
- http://www.gnuvola.org/software/guile/doc/Efficient-Accumulation.html
I can see several arguments against doing so:
- It is a thin layer around (ice-9 q) functionality; possible to
reimplement using (ice-9 q), in fact. When the layer is thin, i
wonder if the usefulness is more personal (a matter of taste) than
general. (See e.g., ttn-do macro `FE'.)
- The interface is procedural, possibly defeating compiler optimization.
When i wrote it, it was an exercise for hobbit. The hope was that
hobbit could eventually learn to optimize usage of (ice-9 accumulate)
calls to (strength-, complexity-)reduce them to (ice-9 q) calls, where
other data-oriented optimizations can come into play. Perhaps that
hope was only a non-compiler-geek dream (sounds nice but unfeasible).
Perhaps Andy can either revive this hope or kindly kill it off now?
- There is already something in Guile. [If so, where? Thanks.]
Of course, the primary argument *for* adding it would be to make porting
my stuff to Guile easier. That's a selfish argument, so take it FWIW.
thi