Thanks. Regular expressions *isn't* what I wanted. (When I've tried
them before [in Python] they made Python seem fast.)
On 03/31/2011 05:06 PM, Thomas Chust wrote:
2011/4/1 Charles Hixson:
[...]
I'm trying to determine whether the last non-whitespace character of a
string is a colon, an
; lnic -- last non-white is colon
(define (lnic? s) ; explode to list
(let loop ((cs (reverse (string->list s
(cond ((null? cs) #f)
((char-whitespace? (car cs)) (loop (cdr cs)))
(else (char=? (car cs) #\:)
(define (lnic? s) ; index into string
(let loop ((i (-
Here is what people are talking about when they say do it w/o regular
expressions:
#lang racket
(require srfi/13)
(define (ends-in-: s)
(define t (string-trim-right s))
(and (> (string-length t) 0) (char=? (string-ref t (- (string-length t) 1))
#\:)))
(ends-in-: "abc")
(ends-in-: " abc
Eli Barzilay wrote at 03/31/2011 07:46 PM:
Two minutes ago, Charles Hixson wrote:
Hi, I'm trying to determine whether the last non-whitespace character of a
string is a colon,
(define (last-non-ws str)
(cond [(regexp-match #px"(\\S)\\s*$" " \t") => cadr]
[else #f]))
then
2011/4/1 Charles Hixson :
> [...]
> I'm trying to determine whether the last non-whitespace character of a
> string is a colon, and I haven't been able to figure out the best way of
> doing this. In python I'd just trim the string and look at the character
> before the end,
> [...]
Hello,
well,
Two minutes ago, Charles Hixson wrote:
> Hi, I'm trying to determine whether the last non-whitespace
> character of a string is a colon, and I haven't been able to figure
> out the best way of doing this. In python I'd just trim the string
> and look at the character before the end, but while Rack
On Thu, Mar 31, 2011 at 7:38 PM, Charles Hixson
wrote:
> Hi,
> I'm trying to determine whether the last non-whitespace character of a
> string is a colon, and I haven't been able to figure out the best way of
> doing this. In python I'd just trim the string and look at the character
> before the
Hi,
I'm trying to determine whether the last non-whitespace character of a
string is a colon, and I haven't been able to figure out the best way of
doing this. In python I'd just trim the string and look at the
character before the end, but while Racket seems to have a string-length
function,
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