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std::unordered_map 和 boost::unordered_map 有什么区别？

[英]What is the difference between std::unordered_map and boost::unordered_map?

原文 2015-10-12 03:23:22 6 1 c++/ boost/ stl/ unordered-map

I found both container used in our codes.我发现我们的代码中使用了这两个容器。 This is a bit of confusing, especially when I include libs that depends on both of them.这有点令人困惑，尤其是当我包含依赖于它们的库时。 So what is the main difference between these two implementations?那么这两种实现之间的主要区别是什么？ Are they interchangeable in all cases?它们在所有情况下都可以互换吗？ Or which should I prefer when I choose from them?或者当我从它们中选择时我应该更喜欢哪个？

1 个解决方案

unlike std counterpart boost::unordered_map (and probably other containers) allows using of incomplete types.与 std 对应的 boost::unordered_map（可能还有其他容器）不同，它允许使用不完整的类型。 that difference probably might change though, see for example https://www.reddit.com/r/cpp/comments/sykzng/since_when_does_gcc_support_stdunordered_map_with/不过，这种差异可能会改变，例如参见https://www.reddit.com/r/cpp/comments/sykzng/since_when_does_gcc_support_stdunordered_map_with/

C++ 中 unordered_map::emplace 和 unordered_map::insert 有什么区别？ - What is the difference between unordered_map::emplace and unordered_map::insert in C++?

std :: unordered_map的以下命令之间是否有任何区别 - Is there any difference between the following commands from std::unordered_map

使用[]和insert（）插入std :: unordered_map有什么区别？ - What is the difference in insertion to std::unordered_map with [] and insert()

使用Boost unordered_map - Using Boost unordered_map

std :: unordered_map包含另一个std :: unordered_map？ - std::unordered_map containing another std::unordered_map?

boost :: unordered_map被…命令了吗？ - boost::unordered_map is… ordered?

boost :: unordered_map中的运算符[] - operator [] in boost::unordered_map

std :: unordered_map初始化 - std::unordered_map initialization

std :: ofstream的unordered_map - unordered_map of std::ofstream

这两种 unordered_map 声明方式有什么区别？ - What is the difference between these two ways of unordered_map declaration?

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