[arr enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
NSLog(@"obj数组的元素%@ idex数组的元素下标%lu",obj,(unsigned long)idx);
}];
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[arr enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
NSLog(@"obj数组的元素%@ idex数组的元素下标%lu",obj,(unsigned long)idx);
}];
转载于:https://www.cnblogs.com/zhaozhongpeng/p/4867623.html