is there something akin to regEx in applescript, and if not, what's the alternative?

Question

I need to parse the first 10 chars of a file name to see if they are all digits. The obvious way to do this is fileName =~ m/^\\d{10}/ but I\'m not seeing anything regExy i

Answer 1

Here's another way to check if first ten characters of any string are digits.

    on checkFilename(thisName)
        set {n, isOk} to {length of fileName, true}
        try
            repeat with i from 1 to 10
                set isOk to (isOk and ((character i of thisName) is in "0123456789"))
            end repeat
            return isOk
        on error
            return false
        end try
    end checkFilename