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def p_drop_append_le

bend-osdev-bytes@0.1.1.0 · PROOF.bend:1200

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

1200def p_drop_append_le(+n: Nat, +a: B.Octets, +b: B.Octets) -> {Nat.is_le(n, B.Octets.len(a)) == True{} : Bool} -> {B.Octets.drop(n, B.Octets.append(a, b)) == B.Octets.append(B.Octets.drop(n, a), b) : B.Octets}:
1201  match a b:
1202    case B.Octets{+xs} B.Octets{+ys}:
1203      h => q_drop_app_le(n, xs, ys, off.len_fast_le(n, xs, h))

Uses (9)

Used by (2)