Provide infix compareTo extension for Comparable<T> #KT-46423

libraries/stdlib/src/kotlin/comparisons/compareTo.kt

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2010-2021 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package kotlin
+
+import kotlin.internal.InlineOnly
+
+/**
+ * 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].
+ *
+ * This function delegates to [Comparable.compareTo] and allows to call it in infix form.
+ */
+@InlineOnly
+@SinceKotlin("1.6")
+public inline infix fun <T> Comparable<T>.compareTo(other: T): Int =
+    this.compareTo(other)