def keep_left_expected

bendtorch-core@0.1.0.0 · src/autograd/broadcast_PROOF.bend:71

import Base
import bendtorch-core@0.1.0.0/src/tensor/core.bend as Core
import bendtorch-core@0.1.0.0/src/tensor/elementwise.bend as Elementwise

71def keep_left_expected(-right: Core.Dynamic, -right_index: U32, +left: Maybe<&2, F32>, -value: F32,
72  -present: {Some{value} == Core.checked_observe_dynamic(right, right_index) : Maybe<&2, F32>}) ->
73  Holds<{Elementwise.expected_left(Elementwise.KeepLeft{}, right, right_index, left) == left : Maybe<&2, F32>}>:
74  match left:
75    case None{}:
76      Holds{{==}}
77    case Some{+found}:
78      Holds{
79        %present : {Elementwise.expected_right(Elementwise.KeepLeft{}, found, _) == Some{found} : Maybe<&2, F32>}
80        {==}}