This is not a regular expression, but rather what is know as the "ternary
operator". It is a terse way of writing an if-else statement with variable
assignment. In this case, it is the equivalent of writing:
if (!X) {
X = 2;
} else {
X = X;
}
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of
lorid
Sent: Thursday, March 10, 2005 5:02 PM
To: perl-win32-users
Subject: simple reg ex
I know this is perl not javascript, I thought I was good at deciphering reg ex
but the 2nd line in this function has got me puzzled.
Can anyone decipher:
X = (!X ? 2 : X);
function round(number,X) {
> > // rounds number to X decimal places, defaults to 2
> > X = (!X ? 2 : X);
> > return Math.round(number*Math.pow(10,X))/Math.pow(10,X);
> > }
thanks
lori
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