Measuring Code Execution Time in Kotlin: A Comprehensive Guide

2023/08/31

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The article discusses how to measure code execution time in Kotlin using the language's built-in functions. It compares the classic Java-style way of measuring execution time with the benefits of Kotlin's approach. The article provides an illustrative example of comparing the performance of ArrayList and LinkedList by measuring the time it takes to add 50 million integers and sum them up. It then introduces Kotlin's measureTimeNanos and measureTimeMillis functions, which simplify the process of measuring execution time. The article also explains the measureTime function, which returns a Duration object and offers methods to convert the duration to the desired time unit. Finally, it presents the measureTimedValue function, which combines concise syntax with the ability to retrieve both the duration and the code result. The article concludes by mentioning that the more advanced time-measuring methods are marked as experimental and advises caution when using them in production code.