i want to remove items from a hash then later see if they exist using
defined(). for example:
delete($hash{MYKEY});
# blah blah
if (defined($hash{MYKEY})) {
# do blah blah
}
which should i use? delete() or undef()? obviously i could write a small
script to test this (which i'm going to know), but i'd also like to hear
from an expert about the subtle (if any) difference between the two if they
both work.
also, are these functionally equivalent?
$myvar = undef();
undef($myvar);
thanks for the help.
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