小6におすすめな言語 (549ﾚｽ)
上下前次1-新

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106: 2020/10/25(日)19:31 ID:7UCeAjtw(5/5) AAS
合併のHaskell(リスト)の例

[] ++ ys = ys
(x:xs) ++ ys = xs ++ (x:ys)

[1,1,1] ++ [1,1]
= [1,1] ++ 1:[1,1]
= [1] ++ 1:1:[1,1]
= [] ++ 1:1:1:[1,1]
= 1:1:1:[1,1]
= [1,1,1,1,1]

増加のHaskell(リスト)の例

xs ^+ [] = xs
xs ^+ (_:ys) = 1:xs ^+ ys

[1,1,1] ^+ ['a','b']
= 1:[1,1,1] ^+ ['b']
= 1:1:[1,1,1] ^+ []
= 1:1:[1,1,1]
= [1,1,1,1,1]

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上下前次1-新書関写板覧索設栞歴

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