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Add hopefully helpful comment to the source

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LeonineKing1199
2021-12-03 08:41:42 -08:00
parent 33f84624ec
commit 12977a50bc
1 changed files with 5 additions and 1 deletions
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6
include/boost/unordered/detail/implementation.hpp
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@ -3631,7 +3631,11 @@ namespace boost {
node_pointer n = next_node(prev); node_pointer n = next_node(prev);
if (!n) { if (!n) {
return link_pointer(); return link_pointer();
} else if (n->is_first_in_group()) { }
// the `first_in_group()` checks are required for the multi-containers
// for the unique containers, this condition seems to be always true
//
else if (n->is_first_in_group()) {
if (node_bucket(n) != bucket_index) { if (node_bucket(n) != bucket_index) {
return link_pointer(); return link_pointer();
} else if (eq(k, this->get_key(n))) { } else if (eq(k, this->get_key(n))) {