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| Code Block | ||||
|---|---|---|---|---|
| ||||
sub read_users {
open( my $filehandle, "<", "/etc/shadow")
or return;
my @users = <$filehandle>;
return @users;
}
|
Exceptions
EXP00-EX1: This recommendation applies specifically to functions called in a list context. If you can guarentee that some function will never be called in a list context, then that function may return undef.
Risk Assessment
Improper interpretation of return undef can lead to incorrect program flow.
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