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objective c - How to stop enumerateObjectsUsingBlock Swift

How do I stop a block enumeration?

    myArray.enumerateObjectsUsingBlock( { object, index, stop in
        //how do I stop the enumeration in here??
    })

I know in obj-c you do this:

    [myArray enumerateObjectsUsingBlock:^(id *myObject, NSUInteger idx, BOOL *stop) {
        *stop = YES;
    }];
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This has unfortunately changed every major version of Swift. Here's a breakdown:

Swift 1

stop.withUnsafePointer { p in p.memory = true }

Swift 2

stop.memory = true

Swift 3

stop.pointee = true

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