compareTo

kotlin-stdlib / kotlin / Enum / compareTo
Platform and version requirements: JVM (1.0), JS (1.0), Native (1.0) 
fun compareTo(other: E): Int

Compares this object with the specified object for order. Returns zero if this object is equal to the specified other object, a negative number if it's less than other, or a positive number if it's greater than other.

Platform and version requirements: JS (1.1) 
fun compareTo(other: Enum<T>): Int

Overrides Comparable.compareTo

Compares this object with the specified object for order. Returns zero if this object is equal to the specified other object, a negative number if it's less than other, or a positive number if it's greater than other.

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Licensed under the Apache License, Version 2.0.
https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-enum/compare-to.html