inline fun <E, R> Array<E>.ifWithinBound(index: Int, thenBlock: () -> R, elseBlock: () -> R): R (source)
Checks if the given index is within the bound of this List (index < List.size) and correspondingly executes the thenBlock or the elseBlock.
Use getOrElse in case you want to retrieve the element at position index or a default value. This function is meant for other things such as check if upper bound of range is within bound and return a sublist or return an empty list etc.
index - The index which is used for the bound check.
thenBlock - The block which is executed if the index is within the bound.
elseBlock - The block which is executed if the index is outside of the bound.