example.go

package main

import (
	"bufio"
	"os"
	"fmt"
)
func main(){

  /**
   * Description in the book about whats going on:
   * ========================================================
   * This prints the text of each line that appears more than
   * once in the standard input, preceded by its count
   * ========================================================
   **/
    
  /**
   * Issue: it does not do whats described (see above). What going wrong?
   **/
  
  /**
   * Code: copy past
   **/
  
	counts := make(map[string]int)
	input := bufio.NewScanner(os.Stdin)

	for input.Scan() {
		counts[input.Text()]++
	}

	for line, n := range counts {
		fmt.Printf("%d\t%s\n", n, line)
	}

}