Go - Arrays, Slices, and Maps(make, length(len function), for loop, range, smallest number)

Introducing Go

開発環境

• macOS High Sierra - Apple (OS)
• Emacs (Text Editor)
• Go (プログラミング言語)

Introducing Go: Build Reliable, Scalable Programs (Caleb Doxsey (著)、O'Reilly Media)のChapter 5.(Arrays, Slices, and Maps)、Exercises(No. 854)2、3、4.を取り組んでみる。

コード(Emacs)

package main

import "fmt"

func main() {
 fmt.Println("2.")
 s := make([]int, 3, 9)
 fmt.Println(s, len(s) == 3)

 fmt.Println("3.")
 x := [6]string{"a", "b", "c", "d", "e", "f"}
 // [c, d, e]
 fmt.Println(x[2:5])

 fmt.Println("4.")
 z := []int{
  48, 96, 86, 68,
  57, 82, 63, 70,
  37, 34, 83, 27,
  19, 97, 9, 17,
 }
 smallest := z[0]
 for _, n := range z {
  if n < smallest {
   smallest = n
  }
 }
 fmt.Println(smallest)
}

入出力結果(Terminal)

$ go run sample2.go 
2.
[0 0 0] true
3.
[c d e]
4.
9
$