创建新变量避免循环变量地址问题 #2164
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创建新变量避免循环变量地址问题 #2164
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有两个小问题 |
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为什么需要 category := category：
在 Go 1.22 之前，循环变量 category 在每次迭代中使用同一个内存地址
如果直接使用 &category，所有指针都会指向最后一次迭代的值
虽然 Go 1.22+ 已修复此问题（每次迭代创建新变量），但显式创建新变量
可以保证代码在所有 Go 版本中都能正确工作，提高可移植性
代码意图更明确：明确表示我们要为每个节点创建独立的内存空间