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core.​init.​data.​array.​slice

core.​init.​data.​array.​slice

source
array.​drop
array.​reverse
array.​slice
array.​take
array.​take_right
source
def array.​slice {α : Type u} {n : ℕ} (a : array n α) (k l : ℕ) :
k ≤ l → l ≤ n → array (l - k) α

Equations
  • a.slice k l h₁ h₂ = {data := λ (_x : fin (l - k)), array.slice._match_1 a k l h₁ h₂ _x}
  • array.slice._match_1 a k l h₁ h₂ ⟨i, hi⟩ = a.read ⟨i + k, _⟩
source
def array.​take {α : Type u} {n : ℕ} (a : array n α) (m : ℕ) :
m ≤ n → array m α

Equations
source
def array.​drop {α : Type u} {n : ℕ} (a : array n α) (m : ℕ) :
m ≤ n → array (n - m) α

Equations
source
def array.​take_right {α : Type u} {n : ℕ} (a : array n α) (m : ℕ) :
m ≤ n → array m α

Equations
source
def array.​reverse {α : Type u} {n : ℕ} :
array n α → array n α

Equations

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