33 lines
805 B
Markdown
33 lines
805 B
Markdown
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# ResourcePath::GetExtension
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```cpp
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Containers::String GetExtension() const
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```
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获取文件扩展名。
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**详细描述：**
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返回路径字符串的文件扩展名部分，包括前缀点（`.`）。如果路径为空或不包含扩展名，返回空字符串。
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**返回：** `Containers::String`，包含扩展名（如 `".png"`），如果无扩展名则返回空字符串
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**复杂度：** O(n)，n 为路径长度
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**示例：**
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```cpp
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ResourcePath path("textures/player.png");
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Containers::String ext = path.GetExtension(); // ".png"
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ResourcePath path2("textures/player");
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Containers::String ext2 = path2.GetExtension(); // ""
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ResourcePath path3("");
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Containers::String ext3 = path3.GetExtension(); // ""
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```
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## 相关文档
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- [ResourcePath 总览](resourcepath.md) - 返回类总览
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