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「右結合的な演算」とは？ #1552

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Feb 11, 2025
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「右結合的な演算」とは？ #1552

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4 changes: 2 additions & 2 deletions LeanByExample/Type/List.lean
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Expand Up @@ -91,7 +91,7 @@ end

/- ### foldr

`List.foldr` は、右結合的な二項演算でリストの各要素を繋げて畳み込む(fold)関数です。
`List.foldr` は、二項演算でリストの各要素を右結合的に繋げて畳み込む(fold)関数です。
-/

/-- `List.foldr` の例示のための型クラス -/
Expand Down Expand Up @@ -147,7 +147,7 @@ namespace Foldr
end Foldr
/- ### foldl

`List.foldl` は、左結合的な二項演算でリストの各要素を繋げて畳み込む関数です。
`List.foldl` は、二項演算でリストの各要素を左結合的に繋げて畳み込む関数です。
-/
/-- `List.foldl` の例示のための型クラス -/
class Foldl (α β : Type) where
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