从NSArray中删除空NSStrings的最简单方法是什么？

在PHP中，它是一行代码：

In PHP it's one line of code:

$array_without_empty_strs = array_filter($array_with_empty_strs);

目标C当量是什么？

更新 - 添加以下测试代码以说明Nikolai Ruhe解决方案的使用：

UPDATE - Added the following test code to illustrate the use of Nikolai Ruhe's solution:

// SOLUTION Test Code
NSMutableArray *myArray = [[NSMutableArray alloc] init ];
[myArray addObject:[NSNumber numberWithInt:5]];
[myArray addObject:@""];
[myArray addObject:@"test"];
NSLog(@"%@", myArray);
[myArray removeObject:@""];
NSLog(@"%@", myArray);

// SOLUTION Test Code Output
2012-07-12 08:18:16.271 Calculator[1527:f803] (
    5,
    "",
    test
)
2012-07-12 08:18:16.273 Calculator[1527:f803] (
    5,
    test
)