Broadcast for Array of Array

@hasanOryx wrote:

I’ve the below function

sigmoid(z::Real) = one(z) / (one(z) + exp(-z))

And want to broadcast it for all the element of x, where:

X = [
           [1, 2, 3],
           [3, 4, 5],
           [5, 6, 7]
       ]

I tried the normal way but failed

sigmoid.(X)

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