Data commit

Task/Associative-array-Creation/Wren/associative-array-creation.wren

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+var fruit = {}                   // creates an empty map
+fruit[1] = "orange"              // associates a key of 1 with "orange"
+fruit[2] = "apple"               // associates a key of 2 with "apple"
+System.print(fruit[1])           // retrieves the value with a key of 1 and prints it out
+fruit.remove(1)                  // removes the entry with a key of 1 from the map
+System.print(fruit)              // prints the rest of the map
+System.print()
+var capitals = {                 // creates a new map with three entries
+    "France": "Paris",
+    "Germany": "Berlin",
+    "Spain": "Madrid"
+}
+capitals["Russia"] = "Moscow"    // adds another entry
+System.print(capitals["France"]) // retrieves the "France" entry and prints out its capital
+capitals.remove("France")        // removes the "France" entry
+System.print(capitals)           // prints all remaining entries
+System.print(capitals.count)     // prints the number of remaining entries
+System.print(capitals["Sweden"]) // prints the entry for Sweden (null as there isn't one)