Function mu_comma_lambda 

pub fn mu_comma_lambda<B: Backend>(
    offspring: Tensor<B, 2>,
    offspring_fitness: &[f32],
    mu: usize,
    device: &B::Device,
) -> (Tensor<B, 2>, Vec<f32>)

(μ, λ) replacement: discard parents; keep the μ best of the λ offspring. Requires lambda >= mu.

Panics

Panics if mu > offspring_fitness.len() (i.e. lambda < mu).