def p_slice_drop

bend-osdev-bytes@0.1.1.0 · PROOF.bend:1225

import Base
import bend-osdev-bytes@0.1.1.0/bytes.bend as B

1225def p_slice_drop(+j: Nat, +i: Nat, +n: Nat, +o: B.Octets) -> {B.Octets.slice(i, n, B.Octets.drop(j, o)) == B.Octets.slice(Nat.add(j, i), n, o) : B.Octets}:
1226  Equal.cong(B.Octets, B.Octets, x => B.Octets.take(n, x), B.Octets.drop(i, B.Octets.drop(j, o)), B.Octets.drop(Nat.add(j, i), o), p_drop_drop(j, i, o))