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kotlinlang

Hi, I'm new to Kotlin and I have a question about the code snippet from the official doc:  `val a: Int = 100`
    `val boxedA: Int? = a`
    `val anotherBoxedA: Int? = a`
    
    `val b: Int = 10000`
    `val boxedB: Int? = b`
    `val anotherBoxedB: Int? = b`
    
    `println(boxedA === anotherBoxedA) // true`
    `println(boxedB === anotherBoxedB) // false`

<https://dzone.com/articles/the-internal-cache-of-integers|https://dzone.com/articles/the-internal-cache-of-integers>

Oh, good to know that there is some underlying optimization by JVM