Working with Objective-C blocks with Swift

Question

I\'m having trouble using the Objective-C Firebase framework in a new Swift project. I\'m coming from mostly a C# background so the Swift closure syntax isn\'t that clear y

Answer 1

Here's the Swift equivalent:

f.observeEventType(FEventTypeValue, withBlock: {
    snapshot in
    println("\(snapshot.name) -> \(snapshot.value)")
})

The key here is the in keyword to assign arguments to the closure to variables

Answer 2

To throw in implied names and tail closures, you can use:

f.observeEventType(FEventTypeValue) {
    println("\($0.name) -> \($0.value)")
}

Answer 3

Swift blocks are interchangeable with Objective-C blocks, so it ought to be something like:

f.observeEventType(FEventTypeValue, withBlock: { 
    snapshot in 
    println("\(snapshot.name) -> \(snapshot.value)")
})