Kotlin for loop is used to iterate a part of program several times. It iterates through arrays, ranges, collections, or anything that provides for iterate.
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Kotlin List foreach is used perform the given action on each item of the list . Inside the code block of forEach, the item could be referenced as it.
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Kotlin for loop is equivalent to the foreach loop in languages like C#.
Read moreWhat does ?: Mean in Kotlin?
length ?: -1. If the expression to the left of ?: is not null , the Elvis operator returns it, otherwise it returns the expression to the right . Note that the expression on the right-hand side is evaluated only if the left-hand side is null .
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