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From: "WJ" <w_a_x_...@yahoo.com>
Newsgroups: comp.lang.scheme
Subject: Re: Splitting a string on a character...
Date: 15 Nov 2012 03:45:08 GMT
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Thomas F. Burdick wrote:

> Cory Spencer <cspen...@interchange.ubc.ca> writes:
> 
> > Just a quickie question - is there already a Common Lisp function that
> > will split a string on a given character?
> 
> No.  Personally, I'm glad.  All the functions that deal with sequences
> let you specify :start and :end, and we have POSITION.  Which all add
> up to a more reasonable, less garbage-y way of doing things.  You can
> see more of my thoughts on the matter here:

Wow!  You mean that CL is so powerful that it enables one to roll
his own split function?  Gee whiz!  It's like a Turing Machine or
assembly language!  No wonder you're glad!  I wish I had a language
like that: one that makes you continually reinvent the wheel!



Harald Hanche-Olsen wrote:

> (defun split (thing sequence)
>   (loop for start = 0 then (1+ end)
>         for end = (position thing sequence :start start)
>         collect (subseq sequence start end)
>         while end))


Clojure:


user=> (clojure.string/split "eeny,meeny  , miney, mo" #"[, ]+")
["eeny" "meeny" "miney" "mo"]


Say we want to stop splitting after we have 3 items:

user=> (clojure.string/split "eeny,meeny  , miney, mo" #"[, ]+" 3)
["eeny" "meeny" "miney, mo"]