def sum_found
import bendtorch-core@0.1.0.0/src/autograd/tensor_backward.bend as TensorBackwardimport Base
import bendtorch-core@0.1.0.0/src/tensor/core.bend as Core
1360def sum_found(+a: Nat, pair: Found()) -> Tape & Result<&2, &2, Error, Nat>:
1361 (entries, input) = pair
1362 match input:
1363 case Fail{error}:
1364 (Tape{entries}, Fail{UnknownNode{}})
1365 case Done{input}:
1366 sum_shaped(a, entries, Core.shape(input))