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Re^2: Can't understand function returning undefs

by rg0now (Chaplain)
on Sep 24, 2010 at 20:43 UTC ( [id://861880]=note: print w/replies, xml ) Need Help??

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  1. or download this
    sub recv_data{
    if(read_some_data){
...
        return;
    }
}
  2. or download this
    while(($x, $y) = recv_data){
    ...
}
  3. or download this
    while(1){
    my($x, $y) = recv_data;
    last unless defined $x;
    ...
}

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