32 lines
771 B
Markdown
32 lines
771 B
Markdown
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# HashMap::HashMap
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```cpp
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HashMap();
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explicit HashMap(size_t bucketCount, Memory::IAllocator* allocator = nullptr);
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```
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构造哈希表实例。
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**参数：**
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- `bucketCount` - 初始桶的数量，默认为 16。若传入 0，则自动调整为 16。
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- `allocator` - 内存分配器指针，默认为 `nullptr`（使用默认分配器）。
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**返回：** 无
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**复杂度：** O(bucketCount)，需要初始化所有桶
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**示例：**
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```cpp
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XCEngine::Containers::HashMap<int, const char*> map1;
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XCEngine::Containers::HashMap<int, const char*> map2(32);
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auto customAllocator = XCEngine::Memory::GetDefaultAllocator();
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XCEngine::Containers::HashMap<int, const char*> map3(64, customAllocator);
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```
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## 相关文档
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- [HashMap 总览](hashmap.md) - 返回类总览
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