ios循环时操作数组

NSEnumerator *enumerator = [langArray objectEnumerator];

id object;

while ((object = [enumerator nextObject]) != nil) {

NSLog(@"langArray=%@", object);

}

[langArray enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOLBOOL *stop) {

NSLog(@"idx=%d, id=%@", idx, obj);

}];