Completed Coursera: Kotlin for developers course

src/Functions.kt

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+// Specify the name to use when calling from another language
+@file:JvmName("fun")
+
+fun main() {
+    print(max(2, 3))
+
+    println(
+        // Named arguments are optional
+        listOf("a", "b", "c").joinToString(
+            separator = "",
+            prefix = "(",
+            postfix = ")"
+        )
+    )
+
+    // Using default value
+    println(repeatString("*"))
+    println(repeatString("*", 2))
+    // Flip the arguments by using named arguments
+    println(repeatString(times = 5, s = "*"))
+}
+
+// Top-level function
+fun max(a: Int, b: Int): Int = if (a > b) a else b
+
+// Unit return type
+fun print(value: Int) = println("Max is $value")
+
+// Times has a default value
+fun repeatString(s: String, times: Int = 10): String = s.repeat(times)
+
+// Generates 4 overloaded functions for the JVM. Not needed when only using Kotlin
+@JvmOverloads
+fun sum(a: Int = 0, b: Int = 0, c: Int = 0) = a + b + c