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Re: predicate->char-set considered harmful

This page is part of the web mail archives of SRFI 14 from before July 7th, 2015. The new archives for SRFI 14 contain all messages, not just those from before July 7th, 2015.

   From: Brad Lucier <lucier@xxxxxxxxxxxxxxx>

   >    I hope you don't try to define predicate->bitset in a later SRFI ;-).
   > Well, I guess it's too late to put it into the lset-... suite of
   > operations in SRFI 1...

   My unstated (definitely understated) point is that predicate->bitset
   will never return in the general case, which isn't much different from
   how long it will take predicate->char-set to return on systems that use
   a four-byte character representation.

Yep, I understood. Just a little bit of wry academic humor there, on my

Clearly people who use 4-byte char types will have to stear clear of
ops that are linear in the type size.