这是从 NSArray 中删除空白字符串的正确且最有效的方法吗？
这是从 NSArray 中删除空白字符串的正确且最有效的方法吗？
int main(int argc, char *argv[])
{
NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
NSMutableArray *myStrings = [NSMutableArray arrayWithObjects:(id[]){@"Test 1",@"",@"Test 2",@"Test 3",@""} count:5];
NSArray *myFilteredArray = [myStrings filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"length > 0"]]; //Non-destructive, myStrings is still intact
NSLog(@"The original array is: %@",myStrings);
NSLog(@"The filtered array is: %@",myFilteredArray);
[myStrings removeObject:@""]; //Destructive. myStrings will never be the same again
NSLog(@"The altered is: %@",myStrings);
[pool drain];
return 0;
}
Is this a right and most efficient way to remove blank string from NSArray?
int main(int argc, char *argv[])
{
NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
NSMutableArray *myStrings = [NSMutableArray arrayWithObjects:(id[]){@"Test 1",@"",@"Test 2",@"Test 3",@""} count:5];
NSArray *myFilteredArray = [myStrings filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"length > 0"]]; //Non-destructive, myStrings is still intact
NSLog(@"The original array is: %@",myStrings);
NSLog(@"The filtered array is: %@",myFilteredArray);
[myStrings removeObject:@""]; //Destructive. myStrings will never be the same again
NSLog(@"The altered is: %@",myStrings);
[pool drain];
return 0;
}
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我想说，removeObject 是从数组中删除空白对象的最有效方法。 NSPredicate 应该用于更复杂的结构，因此在这方面，考虑到您可以使用removeObject，它是一种矫枉过正的做法。
I would say removeObject is the most efficient way of removing the blank objects from your array. NSPredicate should be used for more complex structures, so in that respect it's an overkill given you could use removeObject.