Inline:
> On Dec 10, 2023, at 12:25, ToddAndMargo via perl6-users
> <perl6-us...@perl.org> wrote:
>
> On 12/9/23 22:49, William Michels via perl6-users wrote:
>> f $x.match( / ^ <+[0..9] + [a..z]> ** 7 $ / ) { do something...};
>
>
> What is the difference between
>
> <+[0..9]
> and
> <[0..9]
>
Nothing, atm (although there may have been an issue with earlier iterations of
Rakudo). Anyway, I find it better to be explicit.
See:
https://docs.raku.org/language/regexes#Enumerated_character_classes_and_ranges
https://docs.raku.org/syntax/%3C%5B%20%5D%3E
>
> And
> / ^ <+[0..9] + [a..z]> ** 7 $ /
>
> does this mean that both [0..9] AND [a..z] have to
> be present. In other words is the an AND or an OR?
>
See Kevin Pye's answer. Basically your regex is asking "Starting from the
beginning of the string and ending at the end of the string, does the string
consist of exactly 7 characters taken from the set of characters including the
digits "0"-through-"9" and the lowercase letters "a"-through-"z"? If you
satisfy those constraints you're okay (`True`). You could match a string where
1) all 7 characters are digits, 2) all 7 characters are lowercase letters, or
3) a mix of digits and lowercase letters adding up to 7 characters in length.
HTH, Bill.
