Re: [Chicken-users] help please

[Linh Dang]

On 12 Apr 2004, address@hidden wrote:
> At Mon, 12 Apr 2004 12:22:49 -0400, Linh Dang wrote:
>>
>> (define (read-and-print)
>>   (unless (eqv? (map parse-ctags-line (read-lines)) '())
>>      (read-and-print)))
>
> Here you're building a large list you don't use.  Did you try
>
> (define (read-and-print)
>    (let ((line (read-line)))
>      (unless (eof-object? line)
>        (parse-ctags-line line)
>         (read-and-print))))

Agree. Thanx. 

I tried my script (with minor adjustments) with bigloo and it's even
slower than chicken. the reason might be that bigloo's PREGEXP-SPLIT
is slower than chicken's STRING-SPLIT. The fact remains that chicken's
IO and bigloo's IO are both much slower than perlio.

The other thing I want to try is bigloo's REGULAR-GRAMMAR
construct. Do you think it will help? Is there something equivalent to
to REGULAR-GRAMMAR in chicken?

I have 3 other questions:

1. is there something like elisp's MAPC in scheme?

2. is there away to increase the buffer size of the input port (or the
   underlying C stdio stream) ?

3. This is a blaspheming question. What's the best/most-efficient
   scheme implementation for text processing? chicken? scsh? bigloo?
   PLT?

Thanx

--
Linh Dang