def leaf
import bendtorch-core@0.1.0.0/src/autograd/backward.bend as Backwardimport Base
281# Records a leaf; its id is the number of entries before it.
282def leaf(tape: Tape, value: F32) -> Tape & Nat:
283 Tape{+entries} = tape
284 (Tape{Entry{Leaf{}, value, None{}} <> entries}, List.length(&2, Entry, entries))