NSIndexpath.item 与 NSIndexpath.row [英] NSIndexpath.item vs NSIndexpath.row

问题描述

有谁知道NSIndexpath.row 和NSIndexpath.item 之间的区别?

Does anyone know the difference between NSIndexpath.row and NSIndexpath.item?

具体来说，我用的是哪个:

Specifically, which one do I use in:

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath;

推荐答案

好吧，这里没有人给出好的答案.

Okay, nobody has given a good answer here.

在 NSIndexPath 中，索引存储在一个名为_indexes"的简单 c 数组中，定义为 NSUInteger*，数组的长度存储在定义为 NSUInteger 的_length"中.访问器section"是_indexes[0]"的别名，item"和row"都是_indexes[1]"的别名.因此两者在功能上是相同的.

Inside NSIndexPath, the indexes are stored in a simple c array called "_indexes" defined as NSUInteger* and the length of the array is stored in "_length" defined as NSUInteger. The accessor "section" is an alias to "_indexes[0]" and both "item" and "row" are aliases to "_indexes[1]". Thus the two are functionally identical.

就编程风格而言——也许还有定义链——你最好在表的上下文中使用row"，在集合的上下文中使用item".

In terms of programming style – and perhaps the definition chain – you would be better using "row" in the context of tables, and "item" in the context of collections.

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