Macro constant 

macro_rules! constant {
    ($value:expr; $($dim:expr),+) => { ... };
}

Create an array of given shape filled with a single value a.k.a constant array

Examples

let _zeros_1d = constant!(0.0f32; 10);
let _ones_3d = constant!(1u32; 3, 3, 3);

let dim = 10;
let mix_shape = constant!(42.0f32; dim, 10);