regular expression for beginning of a string

[gzr2mz39]

This seems to work for finding strings with numbers at the beginning.
However, I'm not sure how to add in the requirement that string may also begin with the letter A.

Does anyone know how to add this requirement to the regular expression below?

fnd=prxmatch('/^\d\/',Test_Result_Number)

So, I want to find 102, 9B101, A101, but I don't want Z10.

Thank you.

[PGStats]

fnd=prxmatch('/^A?\d\/',Test_Result_Number) : A? matches the letter A 0 or 1 time. - PG

[gzr2mz39]

Hi PG,

Do you know how resolve this error?

ERROR: Closing delimiter "/" not found after regular expression "/^A?\d\/".

ERROR: The regular expression passed to the function PRXMATCH contains a syntax error.

Thank you.

[PGStats · Accepted solution]

The problem is the extra '\', it acts as an escape character. The pattern should be

fnd=prxmatch('/^A?\d/',Test_Result_Number)

I hadn't noticed.