Thanks to all for replying to my questions. Cheers always!! Murli
zentara wrote:
On Wed, 26 Feb 2003 16:30:56 -0800, [EMAIL PROTECTED] (T. Murlidharan Nair) wrote:
I have a cgi that need to accept only numeric values. ie +ve or -ve real numbers.
Is there a quick and easy way to check this. I was trying using a reg exp
if(/^[-0-9][\.0-9]*/) {
do something
}
but this breaks when the number is say --75.4 It still accepts if it has two - signs.
$_ = 4.01;
if (/\D/) { print "has nondigits\n" } if (/^\d+$/) { print "is a whole number\n" } if (/^-?\d+$/) { print "is an integer\n" } if (/^[+-]?\d+$/) { print "is a +/- integer\n" } if (/^-?\d+\.?\d*$/) { print "is a real number\n" } if (/^-?(?:\d+(?:\.\d*)?|\.\d+)$/) { print "is a decimal number\n" } if (/^([+-]?)(?=\d|\.\d)\d*(\.\d*)?([Ee]([+-]?\d+))?$/) { print "a C float\n" } ° Also check out the Regex::Common module, it has number-type detection.
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