Re: SRFI-13 final version David Rush 20 Jun 2000 14:56 UTC
firstname.lastname@example.org writes: > One minor whinge concerning SRFI-13: > We still don't have string-split. > > <grovel mode=abject> > Please, please, please, please, please, please... > </grovel> > > You're covered, dude. You just say > (string-tokenize s char-set:graphic) Well, my current deal (I'm feeding the code-repository wombat a source-code control system written in Scsh) needs something like: (string-split s "@") but path manipulators want (string-split s ":") - or - (string-split s ";") And when I port Scsh's nifty filename-manipulations I'll be wanting the ever-lovin' (string-split s "/") I know that Oleg and I aren't a majority, but hey, this is a fairly common thing to do. I even implemented it (not, of course, in full Shiverian generality) in the time that I was waiting for a response. (define (string-split s delimiter) (let ((sl (string-length s)) (dl (string-length delimiter))) (let unfold ((index 0) (strings '())) (let ((start (string-contains s delimiter index))) (if start (unfold (+ start dl) (cons (substring s index start) strings)) (reverse (cons (substring s index sl) strings)) ))) )) but even string-tokenize which admitted a predicate function parameter type would make it semantically easy (as in: not involving SRFI-14) to write all these little snippets. > And, by the way, we *definitely* need to get a good parser/unparser thing > defined. A number->string converter that takes all the field-width, padding, > and other options that a full PRINTF implementation would use, a regexp SRFI, > a LALR parser macro like Manuel Serrano's got in bigloo, etc. Absolutely. The read/rp read/lalrp stuff in Bigloo is one of it's bigger wins. It's amazing how quickly you can write syntactically aware tools for less-privileged languages using it. david rush -- Did mentioning Scsh gain me any points?