Regex for validating mac address margaret macinnis dating site
This definitely doesn't seem to meet any real-world standard for ensuring input is an actual MAC address.
That is exactly 2^48, which means that both of the cases you are trying to exclude are theoretically re = /^(?! While that might not be important in this instance, I believe that the UX can be improved.
Then I worked on a translation services API doing millions of dollars of business. It was the first book to cover the long-awaited Django 1.0. Built using Django, served with gunicorn and nginx. Here's a nice compact regex for checking that MAC addresses have been entered in the correct format.
Now I'm building the core platform of a global startup accelerator. (If you're using this in a double-quoted PHP string, escape the "$" with a backslash.) Some related posts: What happens when you screw up?
I don't doubt that works but I'm more curious as to why my implementation fails as theoretically it would match even -4556-67 and I don't want to be hung up on the poor typing skills of the user giving me the mac.
Simply posting the regex is not going to help Zac learn why his regex needs work.
2) The only way of discovering the limits of the possible is to venture a little way past them into the impossible 3) Any sufficiently advanced technology is indistinguishable from magic. Might be something there of interest to you (in addition to good answers already provided above).
Then I helped big media serve 40 million pages a day. Today I worked on a form and script used for registering users on a restricted-access wireless network.
Would you like to answer one of these unanswered questions instead?
, it would be much better to exclude those cases using ordinary programming logic as @ajp15243 suggested twice, rather than "could you please give me compltely pattern." P. Is someone telling you that you have to do it all in a single regular expression? After some checking, I see that there are 281,474,976,710,656 possible valid MAC addresses. :[\da-f]:)[\da-f]$/i; // ^------------blacklist------------^ ^----------pattern---------^ re.test('ff:ff:ff:ff:ff:ff'); // false re.test('ff:ff:ff:ff:ff:fe'); // true re.test(':'); // false re.test(':'); // true // and of course re.test(':'); // false re.test('::0g') // false I think that while the other answers are all valid, they missed the keypress aspect of the OP's question.
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I'd like to be able to match the : or the 00-00-00-00-00-00 notation. The bummer with what you have there, besides being long, is that it matches stuff if you've got the colons and the dashes intermingled in the same string, which is probably NOT what you want. Petdance, Good catch on the intermixed colons and dashes.