Ruby - Hashes: Labeling Data(Hashes)

Head First Ruby

開発環境

• OS X El Capitan - Apple (OS)
• Emacs (Text Editor)
• Ruby 2.3 (プログラミング言語)

Head First Ruby (Jay McGavren (著)、O'Reilly Media)のChapter 7.(Hashes: Labeling Data)、Hashes、EXERCISE(No. 4011)を取り組んでみる。

EXERCISE(No. 4011)

コード(Emacs)

#!/usr/bin/env ruby2.3
# -*- coding: utf-8 -*-


my_hash = {"one" => "two", :three => "four", 5 => "six"}

puts my_hash[5]
puts my_hash["one"]
puts my_hash[:three]
my_hash["seven"] = 8
puts my_hash["seven"]

入出力結果(Terminal)

$ ./sample1.rb
six
two
four
8
$