extern crate num;

fn sigmoidActivation<'a, T: 'a>(inputs: &'a [T]) -> T
where
    T: ::std::marker::Copy + num::traits::Float + std::ops::Add<T>,
    f32: std::ops::Add<T>,
    T: std::iter::Sum<&'a T>,
{
    (inputs.iter().sum::<T>().exp()).recip()
}

fn main() {
    let vector: Vec<f32> = vec![0.0, 0.1];
    sigmoidActivation(&vector);
}