What is a loop in Kotlin?

There is no traditional for loop in Kotlin unlike Java and other languages. In Kotlin, for loop is used to iterate through ranges, arrays, maps and so on (anything that provides an iterator) . The syntax of for loop in Kotlin is: for (item in collection) { // body of loop }

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Is for each better than for loop?

For Loop: The JavaScript for loop is used to iterate through the array or the elements for a specified number of times. … Javascript. For LoopforEach LoopIt is faster in performance.It is slower than the traditional loop in performance.Difference between forEach and for loop in Javascript – GeeksforGeeks www.geeksforgeeks.org › difference-between-foreach-and-for-loop-in-jav…

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What is the use of for loop?

In computer science, a for-loop (or simply for loop) is a control flow statement for specifying iteration, which allows code to be executed repeatedly . Various keywords are used to specify this statement: descendants of ALGOL use “for”, while descendants of Fortran use “do”.

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What does 2 exclamation marks mean in Kotlin?

AndroidMobile DevelopmentApps/ApplicationsKotlin. In Kotlin, “!!” is an operator that is known as the double-bang operator . This operator is also known as “not-null assertion operator”. This operator is used to convert any value to a non-NULL type value and it throws an exception if the corresponding value is NULL.

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