[magicalhippo]

This is actual JavaScript code, from one of my projects:

    function processAudioData(data, callback) {
       // dump audio data to WAV file  
    }

It's implementing a callback from a library.

Even reading the source code of the library I had problems figuring this one out. Had it been say C# code I'm pretty certain I would have had it done in seconds.

How do you solve this in seconds? I'm genuinely curious as this is something I often struggle with when having to use say Python or JavaScript.