Question

Can we put into a single regular expression , boolean logic : line starts with ‘a’ or ‘b’ .
Question is triggered by using FileHelpers utility which does have a text box “Record Condition Selector” for “ExcludeIfMatchRegex” . Utility is written in C#.
^a – works , just don’t how write down ^a OR ^b

Answer 1

use the | (pipe) feature:

^a|^b

Or, in extended formatting:

^a   # starts with an A
|    # OR
^b   # starts with a B