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add search function to Data.List.Relation.Unary.All #2428

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merged 6 commits into from
Aug 14, 2024
Merged

add search function to Data.List.Relation.Unary.All #2428

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ffbaeb1
adds `search` function
jamesmckinna Jul 4, 2024
f59352f
Nathan's suggestions
jamesmckinna Jul 8, 2024
8c435c7
added `CHANGELOG` entry
jamesmckinna Jul 26, 2024
743866b
Merge branch 'master' into issue989
jamesmckinna Jul 27, 2024
33b7189
Merge branch 'master' into issue989
jamesmckinna Aug 3, 2024
9ba5678
Merge branch 'master' into issue989
MatthewDaggitt Aug 14, 2024
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5 changes: 4 additions & 1 deletion src/Data/List/Relation/Unary/All.agda
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Expand Up @@ -14,7 +14,7 @@ open import Data.List.Membership.Propositional renaming (_∈_ to _∈ₚ_)
import Data.List.Membership.Setoid as SetoidMembership
open import Data.Product.Base as Product
using (∃; -,_; _×_; _,_; proj₁; proj₂; uncurry)
open import Data.Sum.Base as Sum using (inj₁; inj₂)
open import Data.Sum.Base as Sum using (_⊎_;inj₁; inj₂)
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open import Effect.Applicative
open import Effect.Monad
open import Function.Base using (_∘_; _∘′_; id; const)
Expand Down Expand Up @@ -232,6 +232,9 @@ decide p∪q (x ∷ xs) with p∪q x
... | inj₂ qx = inj₂ (here qx)
... | inj₁ px = Sum.map (px ∷_) there (decide p∪q xs)

search : Decidable P → ∀ xs → All (∁ P) xs ⊎ Any P xs
search P? = decide (Sum.swap ∘ (Dec.toSum ∘ P?))
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------------------------------------------------------------------------
-- DEPRECATED
------------------------------------------------------------------------
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