variables - Deleting key/value pairs from perl result in Global symbol requires explicit package name error -

variables - Deleting key/value pairs from perl result in Global symbol requires explicit package name error -

i trying delete key/value pairs hash, global symbol requires explicit bundle name exception , don't know how debug this. read on solutions, none of them seem work. hash declared in fashion:

my $hash = foo();

then go through hash using line of code:

while (my ($key, $value) = each %$hash)

and in block select values don't want , store keys these values in array declared (before loop of course):

my @keysarray = ();

i access array retrieve keys using code can delete them hash:

for $key (@keysarray){ delete $hash{$key};# line of code causing problem }

the lastly line wrote 1 causing global symbol "%hash" requires explicit bundle name exception.

any fixes or doing wrong here.

p.s. changed variable names , removed other internal code, format same.

help please! thanks.

delete $hash{$key} deletes entry %hash. there no %hash. instead want write delete $hash->{$key}, deletes entry %$hash.

i suggest perldoc perlreftut answering of questions references , how utilize them.

perl variables hash cgi