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@@ -1,103 +1,115 @@ | ||
module Stdlib.Data.List; | ||
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open import Stdlib.Data.Bool; | ||
open import Stdlib.Function; | ||
open import Stdlib.Data.Nat; | ||
open import Stdlib.Data.Ord; | ||
open import Stdlib.Data.Product; | ||
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infixr 5 ::; | ||
type List (a : Type) := | ||
nil : List a | ||
| :: : a → List a → List a; | ||
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elem : {A : Type} → (A → A → Bool) → A → List A → Bool; | ||
elem _ _ nil := false; | ||
elem eq s (x :: xs) := eq s x || elem eq s xs; | ||
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foldr : {A : Type} → {B : Type} → (A → B → B) → B → List A → B; | ||
foldr _ z nil := z; | ||
foldr f z (h :: hs) := f h (foldr f z hs); | ||
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foldl : {A : Type} → {B : Type} → (B → A → B) → B → List A → B; | ||
foldl f z nil := z ; | ||
foldl f z (h :: hs) := foldl f (f z h) hs; | ||
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map : {A : Type} → {B : Type} → (A → B) → List A → List B; | ||
map f nil := nil; | ||
map f (h :: hs) := f h :: map f hs; | ||
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filter : {A : Type} → (A → Bool) → List A → List A; | ||
filter _ nil := nil; | ||
filter f (h :: hs) := if (f h) | ||
(h :: filter f hs) | ||
(filter f hs); | ||
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length : {A : Type} → List A → Nat; | ||
length nil := zero; | ||
length (_ :: l) := suc (length l); | ||
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reverse : {A : Type} → List A → List A; | ||
reverse := foldl (flip (::)) nil; | ||
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replicate : {A : Type} → Nat → A → List A; | ||
replicate zero _ := nil; | ||
replicate (suc n) x := x :: replicate n x; | ||
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take : {A : Type} → Nat → List A → List A; | ||
take (suc n) (x :: xs) := x :: take n xs; | ||
take _ _ := nil; | ||
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splitAt : {A : Type} → Nat → List A → List A × List A; | ||
splitAt _ nil := nil , nil ; | ||
splitAt zero xs := nil , xs; | ||
splitAt (suc zero) (x :: xs) := x :: nil , xs; | ||
splitAt (suc (suc m)) (x :: xs) := first ((::) x) (splitAt m xs); | ||
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merge : {A : Type} → (A → A → Ordering) → List A → List A → List A; | ||
merge cmp (x :: xs) (y :: ys) := | ||
if (isLT (cmp x y)) | ||
open import Stdlib.Data.Bool; | ||
open import Stdlib.Function; | ||
open import Stdlib.Data.Nat; | ||
open import Stdlib.Data.Ord; | ||
open import Stdlib.Data.Product; | ||
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infixr 5 ::; | ||
type List (a : Type) := | ||
| nil : List a | ||
| :: : a → List a → List a; | ||
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elem : {A : Type} → (A → A → Bool) → A → List A → Bool; | ||
elem _ _ nil := false; | ||
elem eq s (x :: xs) := eq s x || elem eq s xs; | ||
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foldr : {A : Type} → {B : Type} → (A → B → B) → B → List | ||
A → B; | ||
foldr _ z nil := z; | ||
foldr f z (h :: hs) := f h (foldr f z hs); | ||
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foldl : {A : Type} → {B : Type} → (B → A → B) → B → List | ||
A → B; | ||
foldl f z nil := z; | ||
foldl f z (h :: hs) := foldl f (f z h) hs; | ||
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map : {A : Type} → {B : Type} → (A → B) → List A → List B; | ||
map f nil := nil; | ||
map f (h :: hs) := f h :: map f hs; | ||
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filter : {A : Type} → (A → Bool) → List A → List A; | ||
filter _ nil := nil; | ||
filter f (h :: hs) := if | ||
(f h) | ||
(h :: filter f hs) | ||
(filter f hs); | ||
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length : {A : Type} → List A → Nat; | ||
length nil := zero; | ||
length (_ :: l) := suc (length l); | ||
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reverse : {A : Type} → List A → List A; | ||
reverse := foldl (flip (::)) nil; | ||
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replicate : {A : Type} → Nat → A → List A; | ||
replicate zero _ := nil; | ||
replicate (suc n) x := x :: replicate n x; | ||
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take : {A : Type} → Nat → List A → List A; | ||
take (suc n) (x :: xs) := x :: take n xs; | ||
take _ _ := nil; | ||
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splitAt : {A : Type} → Nat → List A → List A × List A; | ||
splitAt _ nil := nil , nil; | ||
splitAt zero xs := nil , xs; | ||
splitAt (suc zero) (x :: xs) := x :: nil , xs; | ||
splitAt (suc (suc m)) (x :: xs) := first | ||
((::) x) | ||
(splitAt m xs); | ||
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merge : {A : Type} → (A → A → Ordering) → List A → List | ||
A → List A; | ||
merge cmp (x :: xs) (y :: ys) := if | ||
(isLT (cmp x y)) | ||
(x :: merge cmp xs (y :: ys)) | ||
(y :: merge cmp (x :: xs) ys); | ||
merge _ nil ys := ys; | ||
merge _ xs nil := xs; | ||
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partition : {A : Type} → (A → Bool) → List A → List A × List A; | ||
partition _ nil := nil , nil ; | ||
partition f (x :: xs) := (if (f x) first second) ((::) x) (partition f xs); | ||
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infixr 5 ++; | ||
++ : {A : Type} → List A → List A → List A; | ||
++ nil ys := ys; | ||
++ (x :: xs) ys := x :: (xs ++ ys); | ||
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flatten : {A : Type} → List (List A) → List A; | ||
flatten := foldl (++) nil; | ||
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prependToAll : {A : Type} → A → List A → List A; | ||
prependToAll _ nil := nil; | ||
prependToAll sep (x :: xs) := sep :: x :: prependToAll sep xs; | ||
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intersperse : {A : Type} → A → List A → List A; | ||
intersperse _ nil := nil; | ||
intersperse sep (x :: xs) := x :: prependToAll sep xs; | ||
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head : {A : Type} → List A → A; | ||
head (x :: _) := x; | ||
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tail : {A : Type} → List A → List A; | ||
tail (_ :: xs) := xs; | ||
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terminating | ||
transpose : {A : Type} → List (List A) → List (List A); | ||
transpose (nil :: _) := nil; | ||
transpose xss := (map head xss) :: (transpose (map tail xss)); | ||
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any : {A : Type} → (A → Bool) → List A → Bool; | ||
any f xs := foldl (||) false (map f xs); | ||
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null : {A : Type} → List A → Bool; | ||
null nil := true; | ||
null _ := false; | ||
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merge _ nil ys := ys; | ||
merge _ xs nil := xs; | ||
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partition : {A : Type} → (A → Bool) → List A → List A | ||
× List A; | ||
partition _ nil := nil , nil; | ||
partition f (x :: xs) := if | ||
(f x) | ||
first | ||
second | ||
((::) x) | ||
(partition f xs); | ||
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infixr 5 ++; | ||
++ : {A : Type} → List A → List A → List A; | ||
++ nil ys := ys; | ||
++ (x :: xs) ys := x :: xs ++ ys; | ||
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flatten : {A : Type} → List (List A) → List A; | ||
flatten := foldl (++) nil; | ||
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prependToAll : {A : Type} → A → List A → List A; | ||
prependToAll _ nil := nil; | ||
prependToAll sep (x :: xs) := sep | ||
:: x | ||
:: prependToAll sep xs; | ||
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intersperse : {A : Type} → A → List A → List A; | ||
intersperse _ nil := nil; | ||
intersperse sep (x :: xs) := x :: prependToAll sep xs; | ||
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head : {A : Type} → List A → A; | ||
head (x :: _) := x; | ||
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tail : {A : Type} → List A → List A; | ||
tail (_ :: xs) := xs; | ||
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terminating | ||
transpose : {A : Type} → List (List A) → List (List A); | ||
transpose (nil :: _) := nil; | ||
transpose xss := map head xss :: transpose (map tail xss); | ||
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any : {A : Type} → (A → Bool) → List A → Bool; | ||
any f xs := foldl (||) false (map f xs); | ||
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null : {A : Type} → List A → Bool; | ||
null nil := true; | ||
null _ := false; | ||
end; |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -1,15 +1,15 @@ | ||
module Stdlib.Data.List.Ord; | ||
open import Stdlib.Data.Ord; | ||
open import Stdlib.Data.List; | ||
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open import Stdlib.Data.Ord; | ||
open import Stdlib.Data.List; | ||
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compare : {A : Type} → (A → A → Ordering) → List A → List A → Ordering; | ||
compare _ nil nil := EQ; | ||
compare _ nil (_ :: _) := LT; | ||
compare _ (_ :: _) nil := GT; | ||
compare cmp (x :: xs) (y :: ys) := ifOrd (cmp x y) | ||
LT | ||
(compare cmp xs ys) | ||
GT; | ||
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compare : {A : Type} → (A → A → Ordering) → List A → List | ||
A → Ordering; | ||
compare _ nil nil := EQ; | ||
compare _ nil (_ :: _) := LT; | ||
compare _ (_ :: _) nil := GT; | ||
compare cmp (x :: xs) (y :: ys) := ifOrd | ||
(cmp x y) | ||
LT | ||
(compare cmp xs ys) | ||
GT; | ||
end; |
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Original file line number | Diff line number | Diff line change |
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@@ -1,16 +1,13 @@ | ||
module Stdlib.Data.Maybe; | ||
type Maybe (A : Type) := | ||
| nothing : Maybe A | ||
| just : A → Maybe A; | ||
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type Maybe (A : Type) := | ||
nothing : Maybe A | ||
| just : A → Maybe A; | ||
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fromMaybe : {A : Type} → A → Maybe A → A; | ||
fromMaybe a nothing := a; | ||
fromMaybe _ (just a) := a; | ||
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maybe : {A : Type} → {B : Type} → B → (A → B) → Maybe A → B; | ||
maybe b _ nothing := b; | ||
maybe _ f (just a) := f a; | ||
fromMaybe : {A : Type} → A → Maybe A → A; | ||
fromMaybe a nothing := a; | ||
fromMaybe _ (just a) := a; | ||
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maybe : {A : Type} → {B : Type} → B → (A → B) → Maybe A → B; | ||
maybe b _ nothing := b; | ||
maybe _ f (just a) := f a; | ||
end; |
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