目录一、按值删除：remove(value)功能说明示例代码特点二、按索引删除并返回元素：pop(index)功能说明示例代码特点三、通用删除语句：del功能说明示例代码特点四、过滤法创建新列表：列表推导式功能说明示例代码特点
LINQ to SQL .Count takes way to much process time and decreases performances. I am doing a recursive loop and for one child (lets call it parent) I have to check the number of children under it to ma
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