CODEWITHSUNDEEP
perlwhile-loop
Blubber
Blubber

Reputation: 1483

Useless use of private array in void context when getting array length

I'm trying to make a loop that stops when the length of @arr1 and @arr2 are both zero. I get this warning message

Useless use of private array in void context

when I use this

while (scalar (@arr1, @arr2) ) {
  #more code
}

Why do I get a warning?

Upvotes: 3

Views: 452

Answers (1)

choroba
choroba

Reputation: 242103

scalar takes one argument. You have to use a bit more complicated

while (scalar @arr1 or scalar @arr2)

which is fortunately equivalent to shorter

while (@arr1 or @arr2)

Upvotes: 7

Related Questions