"tomb" <t***@technetcenter.com> schreef in bericht
news:IDqxg.18357$ZH1.3372@bignews4.bellsouth.net...
>I have found much documentation on specific patterns, but I can't find
>anything explaining how to reject strings that match both groups.
> My string could contain specific letters or numbers.  If there are
> numbers, then it should NOT have the letters.  If it has the letters, then
> it should NOT have the numbers.
> My pattern for the letters is [cCoOhHlL] and numbers is the entire range
> [0-9].
>
> How can I specify matching one group or the other, and not both?
>
> Thanks for your help.
>
> Tom

> I have found much documentation on specific patterns, but I can't find
> anything explaining how to reject strings that match both groups.
> My string could contain specific letters or numbers.  If there are
> numbers, then it should NOT have the letters.  If it has the letters,
> then it should NOT have the numbers.
> My pattern for the letters is [cCoOhHlL] and numbers is the entire range
> [0-9].
>
> How can I specify matching one group or the other, and not both?
>
> Thanks for your help.
>
> Tom

> Just use the | operator:
>
> ([cCoOhHlL]+|\d+)
>
> (\d is the same as [0-9].)
>
> tomb wrote:
>
>> I have found much documentation on specific patterns, but I can't
>> find anything explaining how to reject strings that match both groups.
>> My string could contain specific letters or numbers.  If there are
>> numbers, then it should NOT have the letters.  If it has the letters,
>> then it should NOT have the numbers.
>> My pattern for the letters is [cCoOhHlL] and numbers is the entire
>> range [0-9].
>>
>> How can I specify matching one group or the other, and not both?
>>
>> Thanks for your help.
>>
>> Tom
>

> This allows chars and numbers, but I want either numbers or chars, but
> not both.
> Thanks.
>
> T
>
> Göran Andersson wrote:
>
>> Just use the | operator:
>>
>> ([cCoOhHlL]+|\d+)
>>
>> (\d is the same as [0-9].)
>>
>> tomb wrote:
>>
>>> I have found much documentation on specific patterns, but I can't
>>> find anything explaining how to reject strings that match both groups.
>>> My string could contain specific letters or numbers.  If there are
>>> numbers, then it should NOT have the letters.  If it has the letters,
>>> then it should NOT have the numbers.
>>> My pattern for the letters is [cCoOhHlL] and numbers is the entire
>>> range [0-9].
>>>
>>> How can I specify matching one group or the other, and not both?
>>>
>>> Thanks for your help.
>>>
>>> Tom
>>

"tomb" <t***@technetcenter.com> wrote in message
news:IDqxg.18357$ZH1.3372@bignews4.bellsouth.net...
|I have found much documentation on specific patterns, but I can't find
| anything explaining how to reject strings that match both groups.
| My string could contain specific letters or numbers.  If there are
| numbers, then it should NOT have the letters.  If it has the letters,
| then it should NOT have the numbers.
| My pattern for the letters is [cCoOhHlL] and numbers is the entire range
| [0-9].
|
| How can I specify matching one group or the other, and not both?
|
| Thanks for your help.
|
| Tom

"tomb" <t***@technetcenter.com> wrote in message
news:iZBxg.17194$ly.11407@bignews6.bellsouth.net...
| Jay B. Harlow [MVP - Outlook] wrote:
|
| >tomb,
| >Try something like:
| >
| >[cCoOhHlL]|[0-9]
| >
| >The | says match the first group or the second group.
| >
| >
| >
| Yes, but it allows both to be there - I only want one or the other, not
| both.
|
| Thanks.
|
| T

>Tomb,
>| Yes, but it allows both to be there - I only want one or the other, not
>| both.
>
>Did you try it? Define specifically what you mean by "I only want one or the
>other"
>
>Given a 1 character input string, the pattern will match either the first
>pattern or the second pattern. However it will match the pattern.
>
>Given multiple character input string, the pattern you gave (hence the
>pattern I gave) will still match a single character. It will match the first
>[cCoOhHlL] or the first [0-9]. However! it will still only match a single
>character!
>
>
>I suspect by "I only want one or the other" you really want is a sequence of
>the first or a sequence of the second. Plus I suspect that you only want a
>sequence of the first or only a sequence of the second. Something like:
>
>    ^([cCoOhHlL]+|[0-9]+)$
>
>Which will match a string that contains a sequence of either pattern, but
>only the sequence of a single pattern.
>
>For example:
>
>        Const pattern As String = "^([cCoOhHlL]+|[0-9]+)$"
>        Static parser As New Regex(pattern, RegexOptions.Compiled)
>
>        Dim inputs() As String = {"Cohl", "Coh2", "1234", "123c"}
>        For Each input As String In inputs
>            Debug.WriteLine(parser.Match(input).Value, input)
>        Next
>
>Now if you want something else: like the entire string can contain a
>substring of the first or a substring of the second, but only a substring of
>one of the two patterns, you could always apply each pattern individually &
>Xor the Match.Success values. Although I suspect there might be a pattern
>that works, such as:
>
>
>    ([cCoOhHlL][^0-9])+|([^cCoOhHlL][0-9]+)
>
>But I have not tested this second pattern... (read I would be surprised it
>works, and will look at it more this evening).
>
>Expresso:
>http://www.ultrapico.com/Expresso.htm
>
>RegEx Workbench:
>http://www.gotdotnet.com/Community/UserSamples/Details.aspx?SampleGuid=c712f2df-b026-4d58-8961-4ee2729d7322
>
>A tutorial & reference on using regular expressions:
>http://www.regular-expressions.info/
>
>The MSDN's documentation on regular expressions:
>http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpgenref/html/cpconRegularExpressionsLanguageElements.asp
>
>Expresso & RegEx Workbench are helpful tools for learning regular
>expressions & testing them.
>
>I use the regular-expressions.info as a general regex reference, then fall
>back to MSDN for the specifics. The above link is .NET 1.x; I don't have the
>.NET 2.0 link handy; not sure if any thing changes in 2.0.
>
>
> 
>