Go - Writing Programs in Go - 配列をmapに変換する関数、mapの出力、forループ、range、キーと値

Go Systems Programming:
Master Linux and Unix
system level programming with Go
楽天ブックス 紀伊國屋書店

開発環境

• macOS Catalina - Apple (OS)
• Emacs (Text Editor)
• Windows 10 Pro (OS)
• Visual Studio Code (Text Editor)
• Go (プログラミング言語)

Go Systems Programming: Master Linux and Unix system level programming with Go (Mihalis Tsoukalos(著)、Packt Publishing)のChapter 2(Writing Programs in Go)、Exercises 6.の解答を求めてみる。

コード

package main

import (
 "fmt"
 "strconv"
)

func arrayToMap(a [4]int) map[string]int {
 m := make(map[string]int)
 for i, v := range a {
  m[strconv.Itoa(i)] = v
 }
 return m
}
func p(m map[string]int) {
 for k, v := range m {
  fmt.Printf("%v: %v\n", k, v)
 }
}
func main() {
 ary := [4]int{1, -2, 14, 0}
 m := arrayToMap(ary)
 p(m)
}

入出力結果(Zsh、PowerShell、Terminal)

% go build
% ./array2map 
2: 14
3: 0
0: 1
1: -2
% ./array2map
3: 0
0: 1
1: -2
2: 14
% ./array2map