We use cookies to ensure you have the best browsing experience on our website. Please read our cookie policy for more information about how we use cookies.
  1. Prepare
  2. Regex
  3. Applications
  4. Alien Username
  5. Discussions

Alien Username

  • torobintu
     + 0 comments

    perl

    while(<>){
    chomp;
    next if $. == 1;
    /^[_\.]\d+[a-zA-Z]*_?$/ ? print "VALID\n" : print "INVALID\n";