Regex for any number of digits, but only one decimal?

[Ian Skinner-3]

Any suggestions on how one would determine that input contains only
numbers and no more then one decimal '.' character.

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[Ben Doom-4]

^\d+\.\d+$

I'm assuming you want digits before and after the decimal.

--Ben Doom

Ian Skinner wrote:
> Any suggestions on how one would determine that input contains only
> numbers and no more then one decimal '.' character.
>
>

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[Ian Skinner-3]

Ben Doom wrote:
> ^\d+\.\d+$
>
> I'm assuming you want digits before and after the decimal.
>
> --Ben Doom
Yes, but either side is optional.  One or the other, but not necessarily
both.

I.E.

..001 = Good
100 = Good
1.1 = Good.
1.1.1 = Bad



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[Ian Skinner-3]

Ben Doom wrote:
> ^\d+\.\d+$
>
> I'm assuming you want digits before and after the decimal.
>
> --Ben Doom
The anchors (^,$) are what I needed.  I basically had "d*\.d*"  Adding
the anchors prevents extra decimal '.' characters.

Thanks.


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[Ben Doom-4]

This will let both sides be optional.  You may want to try:

^(\d+\.\d*|\.\d+)$

This will allow "3.", which may or may not be what you wanted.

--Ben Doom

Ian Skinner wrote:

> Ben Doom wrote:
>> ^\d+\.\d+$
>>
>> I'm assuming you want digits before and after the decimal.
>>
>> --Ben Doom
> The anchors (^,$) are what I needed.  I basically had "d*\.d*"  Adding
> the anchors prevents extra decimal '.' characters.
>
> Thanks.
>
>
>

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