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ruby 文字列オブジェクトについて

Last updated at Posted at 2019-10-31

#文字列概要

  • "" 特殊文字使える、式展開
  • \n⇒改行
  • \t⇒タブ挿入
puts "hello world"

実行結果:hello world

puts "he\nllo wor\tld"

実行結果:
he
llo wor ld

  • '(シングルクォーテーション)では特殊文字を使用することはできない
puts 'he\nllo wor\tld'

実行結果:he\nllo wor\tld

#文字列の式展開

puts "price #{3000 * 4}"
puts 'price #{3000 * 4}'

実行結果:
price 12000
price #{3000 * 4}

name = "My friends"
puts "hello #{name}"

実行結果:hello My friends

puts "hello" + "world"
puts "hello" * 5

実行結果:
hello world
hellohellohellohellohello

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