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高階関数みたいな鳥たちの森
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Hiroki Yoshioka
October 29, 2018
Programming
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130
高階関数みたいな鳥たちの森
#megurorb
Hiroki Yoshioka
October 29, 2018
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Transcript
Copyright Drecom Co., Ltd. All Rights Reserved. !1 ߴ֊ؔΈ͍ͨͳௗͨͪͷ
٢ԬͻΖ͖ʢ͍Ζ JSPIJSPLJʣ
Copyright Drecom Co., Ltd. All Rights Reserved. !2 高階関数みたいな鳥たちが 思い通りの返事をするように
並べましょう。 Bluebird!
Copyright Drecom Co., Ltd. All Rights Reserved. !3 鳥A に「B」と呼びかけると
「B」と返す B B A AB = B 記法
Copyright Drecom Co., Ltd. All Rights Reserved. !4 鳥Aに「B」と呼びかけて 教えてもらった鳥に
「C」と呼びかける B A ABC C 記法
Copyright Drecom Co., Ltd. All Rights Reserved. !5 Identity Bird
Ix = x x x I
Copyright Drecom Co., Ltd. All Rights Reserved. Kestrel - チョウゲンボウ
!6 Kxy = x x K y x
Copyright Drecom Co., Ltd. All Rights Reserved. Starling - ムクドリ
!7 Sxyz = xz(yz) x S y z
Copyright Drecom Co., Ltd. All Rights Reserved. 例題 !8 Sxyz
= xz(yz) Iと同じ返事になるように、KとSを並べなさい (K S 何⽻ ) Ix = x Kxy = x
Copyright Drecom Co., Ltd. All Rights Reserved. Kxy = x
考え中… !9 KxyのxにSを入れてみる KSy = S Ix = x
Copyright Drecom Co., Ltd. All Rights Reserved. 考え中…… !10 SxyzのxにKを入れてみる
Sxyz = xz(yz) SKyz = Kz(yz) = z Ix = x Kxy = x
Copyright Drecom Co., Ltd. All Rights Reserved. 答 !11 SKKx
= Kx(Kx) = x I = SKK
Copyright Drecom Co., Ltd. All Rights Reserved. !12 Mx =
xx x M Mockingbird - マネシツグミ
Copyright Drecom Co., Ltd. All Rights Reserved. 問題1. !13 Sxyz
= xz(yz) Mと同じ返事になるように、SとIを並べなさい (S I 何⽻ ) Ix = x Mx = xx
Copyright Drecom Co., Ltd. All Rights Reserved. !14 Dove &
Bluebird - ハト&ルリコマドリ Dxyzw = xy(zw) Bxyz = x(yz)
Copyright Drecom Co., Ltd. All Rights Reserved. 問題2. !15 Dと同じ返事になるようにBを並べなさい
(B 何⽻ ) Dxyzw = xy(zw) Bxyz = x(yz)
Copyright Drecom Co., Ltd. All Rights Reserved. !16 Thrush &
Cardinal - ツグミ&ショウジョウコウカンチョウ Txy = yx Cxyz = xzy
Copyright Drecom Co., Ltd. All Rights Reserved. 問題3. !17 Tと同じ返事になるようにCとIを並べなさい
(C I 何⽻ ) Txy = yx Cxyz = xzy Ix = x
Copyright Drecom Co., Ltd. All Rights Reserved. 簡単すぎるという人へ !18 すべての鳥は、SとKで再現できるそうですよ
Txy = yx Sxyz = xz(yz) Kxy = x Bxyz = x(yz) Ix = SKKx = x
Copyright Drecom Co., Ltd. All Rights Reserved. !19 応用例と参考文献 yield_self
使 - Qiita Raymond M. Smullyan, To Mock a Mocking Bird 森北出版『 ⿃ 』(訳本)
Copyright Drecom Co., Ltd. All Rights Reserved. 解答 !20 問題1.
M = SII 問題2. D = BB 問題3. T = CI