Regex Google Group

Re: Find Hex number

2009-11-10T10:31:02Z

Nope. [^0x1f] will be treated as any symbol which is not a zero, not a
literal "x", not 1 and not "f"
[^\x1F] is the right syntax for what you meant.
1st approach
Check if 1F is present. And if it is present do nothing. Else do what you need.
2nd approach:
^[^\x1F]*$
will match a set of symbols each and every of them is not 1F

Re: Find Hex number

2009-11-10T10:07:30Z

1) closing bracket incorrect. should be }
2) .{2,} construct allows any symbol to be repeated 3 times or 5
times, i.e. uneven number of times. This should be forbidden in this
case.
So, I suggest
^([0-9a-z][0-9a-z])*8F([0-9a-z ][0-9a-z])*$

Re: Help with inverse of regular expression

2009-11-09T14:37:48Z

For xml manipulation, you're better off with an xml library than
trying to reinvent one based on regex.

Re: Find Hex number

2009-11-08T10:59:41Z

Thanks.
How do I find if a particular character is not present in a string ?
If I use [^0x1f] it would mean any character other than 1f. How do write a
RE which would mean if 1f is not present ? In other words if the patter 1f
is not matched.

thanks
Ashmath

Re: Find Hex number

2009-11-08T07:40:53Z

hmm, maybe this

.{2]*?8F.*

Find Hex number

2009-11-07T17:55:09Z

Hello,

Suppose I have this hex input: "78FE8909CD" etc

Can somebody please let me know what should be the RE to find a
particular byte ?

Say I want to find 8F from the above input ?
RE should return false, because 8F is not found as a byte because the
bytes would be:7F, FE, 89, etc

Is is possible to find this using RE ?

Re: Help with inverse of regular expression

2009-11-07T02:29:57Z

The problem is that I actually want the <def> tags. I am editing a
Pearl script but don't know how perl works properly. I have changed
it to my liking but need to strip all non <def> tags out of the
document. I want to do a find and replace on all non <def> tags.
Script below.

use CGI qw (param escape);

Re: Help with inverse of regular expression

2009-11-06T08:52:38Z

Hm... how about deleting all def tags and their contents and storing
the remainder into the result variable?

By the way, if you have nested def tags your regex may turn to be
imperfect.

Help with inverse of regular expression

2009-11-05T15:49:47Z

I have a working regex that selects all <def>...</def> tags.

<def\b[^>]*>(.*?)</def>

The problem is that I want to select everything other than the def
tags and their contents. How would I go about this?

Re: regex for.. well, anything?

2009-11-05T21:19:01Z

impossible in this scenario. thus my post :)

\S sounds like the winner.

thanks!
sm

Re: JavaScript RegEx Parse Command Line into Array

2009-11-05T10:48:31Z

The nut is cracked! Still it is two step check. Judge yourself if it
is terse or not :)

1. The main regex.
Most of the examples including listed below

keyword:model train locomotive
keyword:redline
sellerid:allwheels2go
keyword:truck sellerid:allwheels2go
keyword:model train locomotive minbid:1

Re: regex for.. well, anything?

2009-11-05T07:39:59Z

Fist of all i think it is easier to check without regexes using
built-in functions like IsEmpty() function or logical "is Not NULL"
check
Calling for regex library will take additional time.
As for regex approach:
1) I think a presence of non-space character is a sign that the field
contains a value.

JavaScript RegEx Parse Command Line into Array

2009-11-04T20:27:25Z

I need a javascript method that will parse a command line instruction
into an array of pairs. The method should utilize the javascript
String.match or other regular expression enabled methods to implement
the parse. The regex should be implemented in a very terse
instruction. The deliverable for this project is a terse javascript

regex for.. well, anything?

2009-11-04T18:54:34Z

hello,

im a seasoned programmer but a regex newb. ive read some excellent
tutorials over the years, but i still often find myself starting all
over with baby steps when it comes to regexes. dunno why.

i need to plug in a regex into a software tool that validates a
string. for this particular string, i dont care *what* the value is,

Re: newbie question

2009-11-04T18:51:33Z

thanks!

On Oct 30, 4:01 am, "Eugeny.Satt...@gmail.com"