def Comb.checked

bend-collections-laws-math@1.0.0.0 · spec/math/generic.bend:172

import Base
import bend-collections-laws-math@1.0.0.0/src/math/num.bend as N
import bend-collections-laws-math@1.0.0.0/src/math/generic.bend as G
import bend-collections-laws-math@1.0.0.0/src/math/natural.bend as M

172def Comb.checked(~T: Data, ~op: N.Op<T> -> T, ~test: N.Test<T> -> Bool, ~val: T -> Nat, ~of: Nat -> T, +w: Nat, +n: T, +k: T) -> Type:
173  {G.comb(~T, ~op, ~test, n, k) == checked(~T, ~of, w, M.comb(val(n), val(k))) : Result<&2, &2, N.NumError, T>}