Kotlin by JetBrains on X: "Concatenating a lot of strings and keeping an eye on performance? For cases like this one, Kotlin provides buildString and its corresponding convenience functions, which make it
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JetBrains - New in Kotlin 1.3: The ifEmpty function can be used in a chained call to specify a fallback value for an empty collection, array, or string. The ifBlank function does
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Useful Kotlin features that (maybe) not everyone knows about : r/Kotlin