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Word boundaries Messages   Related Types This message was discovered on ASPFriends.com 'aspngregexp' list. Responses highlighted in red are from those people who are likely to be able to contribute good, authoratitive information to this discussion. They include Microsoft employees, MVP's and others who IMHO contribute well to these kinds of discussions. Bob Levittan (VIP) I'm trying to come up with a regex that matches a dollar amount, i.e. $12.00 or $1.50 but not $1.234 \$[0-9]+(\.[0-9][0-9])? works up to a point, but it matches more than 2 decimal digits. I want it to fail if there are more than 2, so I figured that \b word boundary would work. \b\$[0-9]+(\.[0-9][0-9])?\b but it doesn't. If I remove the \$ it works as I excpect, but the escaped dollar seems to put it out of whack. Any suggestions? _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com Reply to this message...        Kevin Collins did you try it w/out the first \b ? [Original message clipped] Reply to this message...        Remas Wojciechowski Bob, how about you use a negative lookahead, i.e. find all matches that have two digits after which there is not another digit: [0-9][0-9](?![0-9]) [0-9][0-9] could be also written as [0-9]{2} hth, Remas http://www.aspalliance.com/remas/ --- Bob Levittan <Click here to reveal e-mail address> wrote: [Original message clipped] ===== Remas Wojciechowski http://www.aspalliance.com/remas/ __________________________________________________ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/ Reply to this message...        Bob Levittan (VIP) But then $12.23XYZ would match, as X is not a digit. ----Original Message Follows---- From: Remas Wojciechowski <Click here to reveal e-mail address> Reply-To: "aspngregexp" <Click here to reveal e-mail address> To: "aspngregexp" <Click here to reveal e-mail address> Subject: [aspngregexp] Re: Word boundaries Date: Wed, 18 Jul 2001 08:36:25 -0700 (PDT) Bob, how about you use a negative lookahead, i.e. find all matches that have two digits after which there is not another digit: [0-9][0-9](?![0-9]) [0-9][0-9] could be also written as [0-9]{2} hth, Remas http://www.aspalliance.com/remas/ --- Bob Levittan <Click here to reveal e-mail address> wrote: [Original message clipped] ===== Remas Wojciechowski http://www.aspalliance.com/remas/ __________________________________________________ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/ | [aspngregexp] member Click here to reveal e-mail address = YOUR ID | http://www.asplists.com/asplists/aspngregexp.asp = JOIN/QUIT | http://www.asplists.com/search = SEARCH Archives _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com Reply to this message...        Bob Levittan (VIP) Actually: ^\$[0-9]+(\.[0-9][0-9])?$ does what I want - only matching a dollar amount, not matching within a string. ----Original Message Follows---- From: Remas Wojciechowski <Click here to reveal e-mail address> Reply-To: "aspngregexp" <Click here to reveal e-mail address> To: "aspngregexp" <Click here to reveal e-mail address> Subject: [aspngregexp] Re: Word boundaries Date: Wed, 18 Jul 2001 08:36:25 -0700 (PDT) Bob, how about you use a negative lookahead, i.e. find all matches that have two digits after which there is not another digit: [0-9][0-9](?![0-9]) [0-9][0-9] could be also written as [0-9]{2} hth, Remas http://www.aspalliance.com/remas/ --- Bob Levittan <Click here to reveal e-mail address> wrote: [Original message clipped] ===== Remas Wojciechowski http://www.aspalliance.com/remas/ __________________________________________________ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/ | [aspngregexp] member Click here to reveal e-mail address = YOUR ID | http://www.asplists.com/asplists/aspngregexp.asp = JOIN/QUIT | http://www.asplists.com/search = SEARCH Archives _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com Reply to this message...     Ad MBR BootFX Best-of-breed application framework for .NET projects, developed by Matthew Baxter-Reynolds and MBR IT

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