The Power of JVM Language
summary
Covers concrete JVM tradeoffs: Kotlin’s null-safety with nullable types and Elvis operator and extension functions that become static helpers on the bytecode; default and named arguments compiled via default-argument bitmasking in bytecode; Scala’s tail-call optimization and SAM/ operator-name features; Groovy’s scripting conveniences and Groovy one-liners for tests and XML that cut hundreds of LOC; coroutines described as coroutines implemented as state machines (lightweight threads); notes JVM limits (200+ instructions), classloader pitfalls, and when to prefer Java’s package-private visibility.
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chapters (16)
- 0:00Start
- 3:28What Do You Think about Kotlin and Scala
- 6:54The Power of Jvm Languages
- 22:45Null Pointer
- 26:41Null Safety
- 30:35Extension Function
- 34:03Default and Named Arguments
- 37:04Use More than 32 Arguments in the Function
- 38:13Database Usage
- 38:57Extension Function
- 41:58Automatic Resource Management
- 45:14The Recursion
- 48:06Single Abstract Method
- 50:05Backed in Names
- 55:56Generation of the Xmls
- 1:02:49Callbacks
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