6 Apr
2014
6 Apr
'14
4:35 a.m.
Am 06.04.2014 10:09, schrieb Herbert Valerio Riedel:
On 2014-04-06 at 00:33:34 +0200, Henning Thielemann wrote:
Not exactly, because sortByKey memorizes the results of 'f' and (sortBy . comparing) recomputes 'f' all the time.
...what about a RULE that replaces "sortBy . comparing" by an internal non-exported "sortByKey"?
This might not always be an optimization, like a compiler cannot replace common sub-expressons by let in general.