the-ultimate-guide-to-kotlin-programming__the-pragmatic-programmers

type-checking-and-casting__type-safety-to-save-the-day__the-ultimate-guide-to-kotlin-programming ,  the-ultimate-guide-to-kotlin-programming__the-pragmatic-programmers

creating-a-project__writing-android-applications-with-kotlin__the-ultimate-guide-to-kotlin-programming ,  the-ultimate-guide-to-kotlin-programming__the-pragmatic-programmers-llc ,  the-ultimate-guide-to-kotlin-programming__the-pragmatic-programmers

compile-to-bytecode-and-run__hello-kotlin__the-ultimate-guide-to-kotlin-programming ,  the-ultimate-guide-to-kotlin-programming__the-pragmatic-programmers

when-it’s-time-to-use-when__external-iteration-and-argument-matching__the-ultimate-guide-to-kotlin-programming ,  the-ultimate-guide-to-kotlin-programming__the-pragmatic-programmers-llc ,  the-ultimate-guide-to-kotlin-programming__the-pragmatic-programmers