On Fri, Aug 02, 2002 at 02:08:25AM -0400, Paul Tremblay wrote:
> (I know I did a little test with sed, a python script, and a perl
> script, just changing the word "the" to "teh" in a huge file. Sed and
> python took about he same time, while perl was six times faster.)
This is from the perl source code (sv.c if you are interested):
/* Here is some breathtakingly efficient cheating */
if (rslen) {
while (cnt > 0) { /* this | eat */
cnt--;
if ((*bp++ = *ptr++) == rslast) /* really | dust */
goto thats_all_folks; /* screams | sed :-) */
}
}
else {
Copy(ptr, bp, cnt, char); /* this | eat */
bp += cnt; /* screams | dust */
ptr += cnt; /* louder | sed :-) */
cnt = 0;
}
--
Paul Johnson - paul@xxxxxxxx
http://www.pjcj.net
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