You could use match-time pattern interpolation.

$ perl -Mstrict -Mwarnings -E '
say m{(?x) ( \d ) (??{ ( $1 + 1 ) . ( $1 + 2 ) . ( $1 + 3 ) }) }
   ? qq{$_ - Match}
   : qq{$_ - No match}
   for qw{ abc ab12c 2345 234y 01234 };'
abc - No match
ab12c - No match
2345 - Match
234y - No match
01234 - Match
$

[download]

I hope this is helpful.

Cheers,

JohnGG

In reply to Re: Check a string for consecutive digits by johngg
in thread Check a string for consecutive digits by Anonymous Monk

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