Optional Positional Parameters

Author: smartherd

15_optional_positional_params.dart

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+
+// 1. Required Parameters
+// 2. Optional Positional Parameters
+
+void main() {
+
+	printCities("New York", "New Delhi", "Sydney");
+	print("");
+
+	printCountries("USA");  // You can skip the Optional Positional Parameters
+
+}
+
+// Required Parameters
+void printCities(String name1, String name2, String name3) {
+
+	print("Name 1 is $name1");
+	print("Name 2 is $name2");
+	print("Name 3 is $name3");
+}
+
+// Optional Positional Parameters
+void printCountries(String name1, [String name2, String name3]) {
+
+	print("Name 1 is $name1");
+	print("Name 2 is $name2");
+	print("Name 3 is $name3");
+}