Expand KDoc of inc() and dec() operators #KT-43701

2021-01-18 00:50:15 +03:00
parent b311820159
commit 98d31a1813
16 changed files with 418 additions and 75 deletions
@@ -0,0 +1,46 @@
+/*
+ * 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 samples.misc
+
+import samples.*
+
+class Builtins {
+
+    @Sample
+    fun inc() {
+        val a = 3
+        val b = a.inc()
+        assertPrints(a, "3")
+        assertPrints(b, "4")
+
+        var x = 3
+        val y = x++
+        assertPrints(x, "4")
+        assertPrints(y, "3")
+
+        val z = ++x
+        assertPrints(x, "5")
+        assertPrints(z, "5")
+    }
+
+    @Sample
+    fun dec() {
+        val a = 3
+        val b = a.dec()
+        assertPrints(a, "3")
+        assertPrints(b, "2")
+
+        var x = 3
+        val y = x--
+        assertPrints(x, "2")
+        assertPrints(y, "3")
+
+        val z = --x
+        assertPrints(x, "1")
+        assertPrints(z, "1")
+    }
+}
+