Juerg Oehler [mailto:[EMAIL PROTECTED] wrote:
: Sent: Thursday, July 17, 2003 11:09 AM
: To: [EMAIL PROTECTED]
: Subject: fast match count of char in string
:
:
: hi,
:
: how do efficent count char 'a' in string "abdaatela" ?
Plagiarizing from perlfaq4:
"How can I count the number of occurrences of a
substring within a string?"
There are a number of ways, with varying efficiency:
If you want a count of a certain single character (a)
within a string, you can use the tr/// function like so:
$string = "abdaatela";
$count = ($string =~ tr/a//);
print "There are $count a characters in the string";
HTH,
Charles K. Clarkson
--
Head Bottle Washer,
Clarkson Energy Homes, Inc.
Mobile Home Specialists
254 968-8328
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