in reply to Re: Re: Re: undef'ing @arrays caveat
in thread undef'ing @arrays caveat

Granted. But besides the speed issue, the result is effectively the same.

In the case of undef @array, @array does not actually get undefined (i.e., it still exists), just emptied, however more efficiently than with @array = ().

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Re: Re(4): undef'ing @arrays caveat
by Juerd (Abbot) on Apr 20, 2002 at 23:19 UTC

    @array does not actually get undefined

    undef can only un-define scalars, because only scalars can be not-defined. Hashes and arrays are emptied, subs and globs are destroyed. I think the manual is not clear enough about this. 

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