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Re^2: Clearing an Array of Array's from memory (=undef)

by tye (Sage)
on Aug 29, 2003 at 17:57 UTC ( #287779=note: print w/replies, xml ) Need Help??


in reply to Re: Clearing an Array of Array's from memory
in thread Clearing an Array of Array's from memory

This will make @myarray = undef.

I suspect this is just a case of casual, imprecise language, but you are likely to mislead people with that particular phrasing:

my @myarray = undef; print "\@myarray contains ", 0+@myarray, " elements.\n"; __END__ Produces: @myarray contains 1 elements.
Because     @myarray = undef;
is the same as     @myarray = ( undef );
which isn't at all the same as     undef @myarray;
undef is a function that undefines what is passed to it and then returns a not-defined() scalar value.

                - tye

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