inbox: shrink data structures for publicinbox.*.hide

We no longer vivify the intermediate $ibx->{-hide} hashref,
instead we use $ibx->{-hide_$KEY} directly.  This avoids
an intermediate hashref and extra hash table lookups.

1 files changed, 2 insertions, 6 deletions

diff --git a/lib/PublicInbox/Inbox.pm b/lib/PublicInbox/Inbox.pm
index 7af0ad90..dd689221 100644
--- a/lib/PublicInbox/Inbox.pm
+++ b/lib/PublicInbox/Inbox.pm
@@ -70,12 +70,8 @@ sub new {
                 delete $opts->{feedmax};
         }
         # allow any combination of multi-line or comma-delimited hide entries
-        my $hide = {};
-        if (defined(my $h = $opts->{hide})) {
-                foreach my $v (@$h) {
-                        $hide->{$_} = 1 foreach (split(/\s*,\s*/, $v));
-                }
-                $opts->{-hide} = $hide;
+        for $v (@{delete($opts->{hide}) // []}) {
+                $opts->{-'hide_'.$_} = 1 for split(/\s*,\s*/, $v);
         }
         bless $opts, $class;
 }