Function ndarray_einsum_beta::validate_and_optimize_order

pub fn validate_and_optimize_order<A>(
    input_string: &str, 
    operands: &[&dyn ArrayLike<A>], 
    optimization_strategy: OptimizationMethod
) -> Result<ContractionOrder, &'static str>

Create a SizedContraction and then optimize the order in which pairs of inputs will be contracted.