Early Exit from Fast Enumerate Loop?

Question

When using fast enumeration, is there a way to exit early, i.e. before going through every element in the array?

    for (element in myArray)
    {
        //is there a way to exit before running through every element in myArray?
    }

score 4 · Accepted Answer · answered Jul 12 '13 at 18:02

4

break; will exit any for, while, or do loop.

For example:

for (element in myArray)
{
     if (someExitCondition)
     {
         break; /* leave now */
     }
}

Read this:

answered Jul 12 '13 at 18:02

Justin Meiners

score 2 · Answer 2 · answered Jul 12 '13 at 18:32

2

Better way to do is, use blocks

[dict enumerateKeysAndObjectsUsingBlock:^(id key, id object, BOOL *stop) {
stop = YES // To break the loop }];

answered Jul 12 '13 at 18:32

AAV

What advantages come with this approach? – Justin Meiners Jul 12 '13 at 19:43
In the original post they were already using a standard for loop, so I see no reason to change it to use blocks when there isn't a need. – Ryan Pendleton Jul 12 '13 at 19:46
I am not saying he/she should use this but according to apple enumerateKeysAndObjectsUsingBlock are faster than regular for loop and Fast Enumeration. – AAV Jul 12 '13 at 19:55

2 Answers2