String construction performance

[Dmitry_Petrov_1]

Thanks for the heads up!
BTW, here’s the original blog post (in English): StringBuffer and StringBuilder performance with JMH - AlBlue’s Blog

@imanushin

Does Kotlin have any tuning for this for inline string format (e.g. for “test, text, $myVariable, next text”)?

We generate chained append calls for string templates ("blah ${expr} blah") and chained string concatenation (s1 + s2 + s3).

@imanushin

Does Kotlin have optinizations to convert developer’s code to JVM-friendly code (e.g. when dev. wrotes code in unoptimal way, Kotlin can do invisible speedup)?

Currently - no, we don’t. I’ve created an issue in YT: https://youtrack.jetbrains.com/issue/KT-18558