Hi,

I am looking for some wisdom about a regular expression: 

($ref !~ /^-?\d*(\.0*)?$/)

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Firstly I think that this identifies $ref as an integer (i.e. ref is not equal to a non-integer), that being the case I want to adapt this to identify $ref as a negative integer.

I tried this: 

($ref  !~ /^-[1-9]\d*$/)

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but I was wrong...

Help appreciated.

Scott

In reply to positive integer identification (regular expression question) by noggon

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