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Mastering Kotlin Essentials

Operators: Equality, Inequality, and Comparison

Explore how Kotlin implements equality and inequality with structural and referential checks, and understand how comparison operators enhance readability through operator overloading for natural object ordering.

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The equality and inequality operators

In Kotlin, there are two types of equality:

  • Structural equality: It is checked with the equals method or the == operator (and its negated counterpart !=).

    • The statemenet a == b translates to a.equals(b) when a is not nullable. Otherwise, ...