Velocity Reviews - Computer Hardware Reviews

Reply

How to set the no duplicate regular expression

ad

Guest

Posts: n/a

06-18-2005

I use ^[0-9a-d]*$ to restrict the user input character must within '0'-'9'
or 'a'-'d', but how can I restric that the input character must not
duplicate
a91b
d23c

is ok
but

c9aa
112
...

is not ok

How can I do it?

Reply With Quote

Reply

Thread Tools
Show Printable Version Email this Page

Posting Rules
You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is Off Trackbacks are On Pingbacks are On Refbacks are Off Forum Rules

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Seek xpath expression where an attribute name is a regular expression	GIMME	XML	3	12-29-2008 03:11 PM
C/C++ language proposal: Change the 'case expression' from "integral constant-expression" to "integral expression"	Adem	C++	42	11-04-2008 12:39 PM
C/C++ language proposal: Change the 'case expression' from "integral constant-expression" to "integral expression"	Adem	C Programming	45	11-04-2008 12:39 PM
Matching abitrary expression in a regular expression	=?iso-8859-1?B?bW9vcJk=?=	Java	8	12-02-2005 12:51 AM
Dynamically changing the regular expression of Regular Expression validator	VSK	ASP .Net	2	08-24-2003 02:47 PM

Advertisments

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57