Tensor.backward

Undocumented in source. Be warned that the author may not have intended to support it.
  1. void backward(void delegate(ref Value grads) update)
  2. void backward(U grads)
  3. void backward()
    class Tensor(T, size_t[] Shape, UseGradient hasGradient = UseGradient.yes)
    static if(hasGradient)
    void
    backward
    ()

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