将NSArray复制到一个空的NSArray中(copy NSArray inside an empty NSArray)
我有第一个NSArray firstArray ,我也是
[firstArray removeAllObjects];之后我想填充其他数组secondArray的内容
是这样写的吗?
firstArray = secondArray;I have a first NSArray firstArray and I do
[firstArray removeAllObjects];after I want fill it with the content of an other array secondArray
is it right write in this way?
firstArray = secondArray;最满意答案
不, firstArray = secondArray将重新分配指针,这不是你想要的行为。 你想要[firstArray addObjectsFromArray:secondArray]
No, firstArray = secondArray will reassign the pointers, this is not the behavior you want. You want [firstArray addObjectsFromArray:secondArray]
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