From perlfunc:delete 

The following (inefficiently) deletes all the values of %HASH:

    foreach $key (keys %HASH) { delete $HASH{$key}; }
    foreach $index (0 .. $#ARRAY) { delete $ARRAY[$index]; }

And so do these:

    delete @HASH{keys %HASH};
    delete @ARRAY[0 .. $#ARRAY];

But both of these are slower than just assigning the empty list or und
+efining %HASH or @ARRAY:

    %HASH = ();         # completely empty %HASH
    undef %HASH;        # forget %HASH ever existed

    @ARRAY = ();        # completely empty @ARRAY
    undef @ARRAY;       # forget @ARRAY ever existed

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Examine what is said, not who speaks.

The 7th Rule of perl club is -- pearl clubs are easily damaged. Use a diamond club instead.

In reply to Re: Garbage Collection on Hash delete by BrowserUk
in thread Garbage Collection on Hash delete by netoli

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