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PPAP with Ruby

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PPAP with Ruby

何番煎じと言われようとかまわない。

ループ

PPAP = ["\u2712\ufe0f", "\u{1f34d}\ufe0f", "\u{1f34e}\ufe0f", "\u2712\ufe0f"]

ppap = []

until ppap.last(4) == PPAP do
  ppap << PPAP.sample.tap(&method(:print))
end

puts "ペンパイナッポーアッポーペン"

再帰

PPAP = ["\u2712\ufe0f", "\u{1f34d}\ufe0f", "\u{1f34e}\ufe0f", "\u2712\ufe0f"]

def pikotaro(ppap=[])
  return "ペンパイナッポーアッポーペン" if ppap == PPAP
  pikotaro(ppap.last(3) << PPAP.sample.tap(&method(:print)))
end

puts pikotaro

遅延評価

PPAP = ["\u2712\ufe0f", "\u{1f34d}\ufe0f", "\u{1f34e}\ufe0f", "\u2712\ufe0f"]

loop
  .lazy
  .map {PPAP.sample.tap(&method(:print))}
  .each_cons(4) {|ppap| break puts "ペンパイナッポーアッポーペン" if ppap == PPAP}

実行結果

$ ruby ppap.rb 
🍎️✒️✒️🍎️🍎️✒️🍍️✒️🍍️✒️🍎️✒️✒️🍎️🍍️🍍️✒️🍎️✒️✒️🍎️✒️🍎️✒️✒️🍎️🍎️🍍️✒️🍎️✒️✒️✒️✒️✒️🍎️✒️✒️🍎️🍍️🍍️🍎️✒️🍍️🍍️✒️✒️🍍️✒️✒️✒️✒️✒️✒️🍎️🍍️🍎️✒️✒️✒️✒️🍎️🍍️🍎️🍎️🍎️🍍️🍍️🍎️✒️✒️🍍️✒️🍎️🍎️✒️✒️🍎️✒️🍍️🍍️🍎️🍍️🍎️🍍️✒️🍎️🍍️🍎️✒️🍎️🍍️✒️✒️🍍️🍍️✒️✒️✒️✒️🍎️✒️🍍️✒️✒️🍎️✒️🍍️🍍️✒️🍍️✒️🍍️✒️🍍️🍎️🍍️✒️✒️✒️🍎️✒️✒️✒️✒️✒️✒️🍍️🍍️✒️🍎️🍎️✒️✒️🍎️✒️🍍️✒️🍍️🍎️✒️ペンパイナッポーアッポーペン

参考

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