I am parsing a file and to compare the current line
with the previous line of the file. I am using line-seq
to go thru the file and I thought I would create a
ref to store the previous line. When I want to update
the previous line value I can't seem to do it. I've
never used refs before so I'm
I know you are asking about refs, but you might want to think about
using reduce to walk the line-seq. the nature of reduce lets you have
access to the line-seq, two lines at a time no need for a ref.
On Mon, Nov 24, 2008 at 2:17 PM, Brian Doyle [EMAIL PROTECTED] wrote:
I am parsing a file and
Thanks Kevin, I will try using reduce instead. I would like to know what
I'm doing wrong with updating the ref for future reference. Thanks.
On Mon, Nov 24, 2008 at 3:23 PM, Kevin Downey [EMAIL PROTECTED] wrote:
I know you are asking about refs, but you might want to think about
using
ref-set needs its one set of parens, and the last thing in the ref-set
call needs to be a function either (fn [x] ...) or a symbol for a var
that holds a function
On Mon, Nov 24, 2008 at 2:30 PM, Brian Doyle [EMAIL PROTECTED] wrote:
Thanks Kevin, I will try using reduce instead. I would like
On Mon, Nov 24, 2008 at 2:34 PM, Kevin Downey [EMAIL PROTECTED] wrote:
ref-set needs its one set of parens, and the last thing in the ref-set
call needs to be a function either (fn [x] ...) or a symbol for a var
that holds a function
I made a mistake here. I was thinking of alter, not
Another possible approach. Key idea here is to use partition to create
a sliding window over the lines, plus a sentinel value (I picked )
before the first line. Pretty sure I like partition over reduce for
this particular example.
(ns examples.convert
(:use
Yep, that's just a typo in the email. Something was wrong with my browser
and I
couldn't just paste the code in :(
On Mon, Nov 24, 2008 at 3:33 PM, Shawn Hoover [EMAIL PROTECTED]wrote:
On Mon, Nov 24, 2008 at 5:17 PM, Brian Doyle [EMAIL PROTECTED]wrote:
I am parsing a file and to compare the
