On Thu, Dec 22, 2011 at 11:59 PM, nchurch <nchubr...@gmail.com> wrote: > What I really want you to notice is how we are faced with a choice: > either we improve the library code (presumably by making split > optionally return an array of separators matched by the regex for > later reassembly by join, perhaps in metadata of some sort), or we go > with a less felicitous abstraction. There probably should be some > sort of formal analogue to this decision point in the natural language > text.
Seems to me that the structure is this: A string that's written language is some alternating form like word separator word separator ... where a "word" consists of consecutive alphanumeric characters and a "separator" consists of consecutive nonalphanumeric characters. The separators in this paragraph include " ", " \"", "\" ", ". ", and " \" \", \" \\\"\", \"\\\" \", \". \", ", as well as one more that I can't add here without generating one more still. One tends sometimes to want to split a string in such a fashion, transform the words only, and then reassemble. This in turn suggests tools like: (wordify string) -> a seq of strings starting with a separator and alternating words and separators. The initial separator may be "". Something like (map #(apply str %) (group-by alphanumeric? string)) with alphanumeric? testing a character, but if the first character of the first string in the output seq is alphanumeric, a (cons "" %) needs to be done on the output before returning it. (map-words* f wordified-string) -> (interleave (take-nth 2 wordified-string) (map f (take-nth 2 (next wordified-string)))) (map-words f string) -> (apply str (map-words* f (wordify string))) or similar. -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
