How to broadcast a message to peers

neuronbcast.go

type neuron struct {
    coef float64
    input chan *stimulus
    output []chan *stimulus
}

func newNeuron(coef float64) *neuron {
    n := &neuron{
        coef: coef,
        input: make(chan *stimulus),
    }

    go func() {
        for stimulus := range n.input {
            for _, out := range n.output {
                out <- stimulus.mult(coef)
            }
        }
        for _, out := range n.output {
             close(out)
        }
    }()

    return n
}

func (n *neuron) stimulates(remote *neuron) {
    n.output = append(n.output, remote.input)
}