Match hex 00 or NULL with Match pattern function

Hi, I am using Match pattern funciton to match NULL character and 0000 character in a string (hex display).
Someone told mu use the following regular expression:
^[\00]*, and [\00]*$ , and he said:
\00 is Hex 00
\0 un-defined
But I read some stuffs about regular expression that \0x00 is Hex 00, \00 is Octal 000.I want to know what meaning the \00 is.
Please refer to the attached trim00.vi.
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Attachments:
trim00.vi ‏7 KB
trim00.vi ‏7 KB

Match Pattern and Match Regular Expression are two different functions. With Match Pattern the string ^[\00]* matches any number of null characters starting at the beginning of the string, while the string [\00]*$ matches any number of null characters starting at the end of the string. Check the help for the Match Pattern function for more info.
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How do I use the Match Pattern Function to exclude only 0.000?

Hi,
I'm trying to use the mattch pattern function to find the first string in a table thats is >0. My table looks like:
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"Matt361" <[email protected]> wrote in message news:[email protected]..
Hi,
 
I'm trying to use the mattch pattern function to find the first string in a table thats is >0. My table looks like:
1,0.000000,0.000 %2007/01/13 00:16:19 196281
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If I us the paremeter "1,[~0]" It doesn't find the line 1,0.831262,0.000... which is the one that I want. I also tried :1,[0-9].+[~0] and that didn't work either. the problem is that the first digit after to 1, isn't allways going to go from 0 to 0.0 sometimes it might go from 0 to 2.??.
 
Thanks for the help
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Hi,
1,[~0] matches a "1" a "," and then any character that is not "0".
1,[0-9].+[~0] matches a "1" a "," and then any character that is "0-9", any number of anything!! (1 or more) and then anything that is not "0". Note that you have to escape a . to match a ".". Like this "\.".
There is no way to check if there is anything other then a "0" in the match, from within the match pattern function. So I think you won't be able to find a pattern that does the trick.
Why not use a whileloop to find the first item? Or use the Spreadsheet String To Array, and then compare the desired row or column with the string "0.000000"? (Or replace all ,0.000000, by a string like ",NULL,", then match the pattern?)
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Subhro.
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Go to Solution.

Is the string you show in normal display mode or in \ codes display mode?
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Hi Shannon,
we have assigned the search string as well as the external transaction in global EBS settings to 031 algorithm`(customer from document nubmer), as in normal cases customer invoices are to be cleared here and this is working fine.
For this search pattern here with GL01 we would like to change the rule.
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Hi, I want to extract the space (sometimes, !#" etc) from "@020 12345' using match pattern function.
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*)Enclosed is the VI example in LV2009
Solved!
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Attachments:
yahoo.vi ‏7 KB

labmaster wrote:
Hi, I want to extract the space (sometimes, !#" etc) from "@020 12345' using match pattern function.
You should also describe what you mean by "extract". If you simply need a space, you can use a space diagram constant. No need to extract it. Do you want the resulting string without the space, for example?
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Regular Expression for Match Pattern (string) Function

I need to find a variable length string enclosed by brackets and
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Jean-Pierre Drolet wrote in message news:<[email protected]>...
> The regular expression is "\[[~\]]*\]" which means:
> look for a bracket "\[" (\ is the escape char)
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>
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Hello,
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When my feet touch the ground each morning the devil thinks "bloody hell... He's up again!"
Attachments:
ComboBox.vi ‏12 KB

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Go to Solution.

Yep-
You hit a point that's frustrated me a time or two as well (and incidentally, caused some hair-pulling that I can ill afford)
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Attachments:
Grab Nullterm String.vi ‏15 KB

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Message Edited by GerdW on 06-05-2007 04:44 PM
Best regards,
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Solved!
Go to Solution.

Robert Cole wrote:
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Go to Solution.

Hi TKassis,
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Match hex 00 or NULL with Match pattern function

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