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@GauravChaddha1996
Created January 30, 2021 17:45
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interface Callback {
fun onSuccess(result:Int)
fun onFailure(e: Exception)
}
fun someTask(callback: Callback) {
Thread.sleep(1000)
// Written together for brevity but only one will occur
callback.onSuccess(2)
callback.onFailure(Exception("I failed"))
}
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