Thanks Solomon, I tested the regex that you provided using the same dataset and it returned a false on all the params as it was returning a false on a test value like -37.-09099980980980 . i removed the negation (^) and added a named capture group to truncate the expected value. Basically i modified the regex to be as follows: (?<val>[-]?3[1-7]*[.]{0,1}[0-9]{0,6})[0-9]*$ the required value is found in the named capture group "val" Thanks to Solomon and Josh Regards On Wed, Oct 26, 2011 at 10:52 AM, solomon kariri <solomonkariri@gmail.com>wrote:
What you need to add to your regex expression is boundary matchers to make sure it macthes the whole input string. Something like this ^[-]?3[1-7]*[.]{0,1}[0-9]{0,6}$
On Wed, Oct 26, 2011 at 10:44 AM, Kiti Chigiri <kiti.chigiri@gmail.com>wrote:
Hi,
I am writing a couple of regex values to validate for valid longitude values that should fall within a specific range , and so far i got the general syntax ok
for longitudes , my regex is as follows: [-]?3[1-7]*[.]{0,1}[0-9]{0,6}
i.e an optional negative sign followed by a number in the range 31-37 , followed by an optional decimal point, and if there is a decimal point then a set of numeric character to a max of 6 characters.
When i run the regex on some test values i get the following results -31.00000000 TRUE 31.00000000 TRUE -37.999999999 TRUE 37.999999999 TRUE -36.744uiu82 TRUE ( but should be false.; it truncates the characters to return a true on -36.744) 36.744uiu82 TRUE ( but should be false.; it truncates the characters to return a true on 36.744) -3sers6.744uiu82 TRUE ( but should be false.; it truncates the characters to return a true on -3) 3sers6.744uiu82 TRUE ( but should be false.; it truncates the characters to return a true on 3) 28.90909 FALSE (does not fall in range) -28.90909 FALSE (does not fall in range)
My problem is with the values in the text highlighted . Obviously 36.uoiuy5656 is not a valid value since in its entirety it contains a mix of non-numeric values
What am i doing wrong or missing here? I am not well versed with greedy or backreferenced syntax. Any assitance would be greatly appreciated.
Kind regards
Kiti Chigiri
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-- Solomon Kariri,
Software Developer, Cell: +254736 729 450 Skype: solomonkariri
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