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kotlinlang

Please I need this to be explained :
val collections = listOf(1, 2, 3, 5)
for ((index, element) in collections.withIndex())

First, `.withIndex()` is an extension function that associates all elements to their index using a `Pair`.
So you get an `Iterable&lt;Pair&lt;Int, T&gt;`.

Second, `Pair` is a data class. Which provides `component1()` and `component2()` functions for its properties in the order they appear in the constructor.

`(index, element)` is deconstruction syntax, that uses those component functions in the same order.