Kevin Viel wrote:
> Greetings,
Hello,
> I have a field that a user must enter that must be in a specific
> format. For example:
>
> F8_A000001F0123
>
> The pertinent parts are F8, A, 000001, F, 0123, while the underscore is
> a separator.
>
> I have come up with the following regular expression to match this pattern.
>
> $reverse =~ /^[a-zA-Z0-9]+_A|a[0-9](F|R)[0-9](1-4)$/
Your pattern says to match '^[a-zA-Z0-9]+_A' *OR* match
'a[0-9](F|R)[0-9](1-4)$'. It looks like you may need something like:
$reverse =~ /^[a-zA-Z0-9]+_[Aa]\d+[FR]\d{1,4}$/
> I am unsure if I need to group the relevant parts using (). Could
> anyone advise or is the use of the anchor sufficient?
If you just want to group elements use (?:) unless you want to capture the
contents of the parentheses.
John
--
use Perl;
program
fulfillment
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