learngo/22-maps/exercises/02-populate/main.go

package main

// ---------------------------------------------------------
// EXERCISE: Populate and Lookup
//
//  Add elements to the maps that you've declared in the
//  first exercise, and try them by looking up for the keys.
//
//  Either use the `make()` or `map literals`.
//
//  After completing the exercise, remove the data and check
//  that your program still works.
//
//
//  1. Phone numbers by last name
//     --------------------------
//     bowen  202-555-0179
//     dulin  03.37.77.63.06
//     greco  03489940240
//
//     Print the dulin's phone number.
//
//
//  2. Product availability by Product ID
//     ----------------
//     617841573 true
//     879401371 false
//     576872813 true
//
//     Is Product ID 879401371 available?
//
//
//  3. Multiple phone numbers by last name
//     ------------------------------------------------------
//     bowen  [202-555-0179]
//     dulin  [03.37.77.63.06 03.37.70.50.05 02.20.40.10.04]
//     greco  [03489940240 03489900120]
//
//     What is Greco's second phone number?
//
//
//  4. Shopping basket by Customer ID
//     -------------------------------
//     100 [617841573:4 576872813:2]
//     101 [576872813:5 657473833:20]
//     102 []
//
//     How many of 576872813 the customer 101 is going to buy?
//                (Product ID)  (Customer ID)
//
//
// EXPECTED OUTPUT
//
//   1. Run the solution to see the output
//   2. Here is the output with empty maps:
//
//      dulin's phone number: N/A
//      Product ID #879401371 is not available
//      greco's 2nd phone number: N/A
//      Customer #101 is going to buy 0 from Product ID #576872813.
//
// ---------------------------------------------------------

func main() {
}