Marton, I am not sure of your meaning. I took the warning message as:
For Scalars assign a Nil, for Arrays/Hashes/Etc. use Empty or ().
Because you might be read as suggesting "@ary = Nil should undefine @ary";
I will point out that will conflict with:
@a = Nil;
which is defined to ass
Marton: apologies for badly characterizing your post. I particularly
wanted specify the breakage you mentioned for any beginners passing by;
got delayed and forgot about some of your post.
I just mentioned the basic dual nature of Nil. There is a lot of
complexity around 'Nil' and around contain
