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update try_emplace_l so that the lambda is called only when the key was already present - issue #60

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greg
2020-08-16 18:44:12 -04:00
parent 0d229b1159
commit 5a74cb42ff
2 changed files with 9 additions and 7 deletions
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parallel_hashmap/phmap.h
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+4 -2
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@@ -3457,8 +3457,10 @@ public:
inner->set_.emplace_at(std::get<1>(res), std::piecewise_construct,
std::forward_as_tuple(std::forward<K>(k)),
std::forward_as_tuple(std::forward<Args>(args)...));
auto it = this->iterator_at(inner, inner->set_.iterator_at(std::get<1>(res)));
std::forward<F>(f)(Policy::value(&*it));
else {
auto it = this->iterator_at(inner, inner->set_.iterator_at(std::get<1>(res)));
std::forward<F>(f)(Policy::value(&*it));
}
return std::get<2>(res);
}