main.go 源码
// Copyright © 2018 Inanc Gumus
// Learn Go Programming Course
// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
//
// For more tutorials : https://learngoprogramming.com
// In-person training : https://www.linkedin.com/in/inancgumus/
// Follow me on twitter: https://twitter.com/inancgumus
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 5 from Product ID #576872813.
//
// ---------------------------------------------------------
func main() {
}
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