one liner for Id. TODO: fix by multiple dispatch

OrbitDecomposition.jl

@@ -161,11 +161,10 @@ function compute_orbit_data{T<:GroupElem}(logger, name::String, G::Nemo.Group, S
    isdir(name) || mkdir(name)
 
    info(logger, "Generating ball of radius $(2*radius)")
-   if isa(G, Nemo.Ring)
-      Id = one(G)
-   else
-      Id = G()
-   end
+
+   # TODO: Fix that by multiple dispatch?
+   Id = (isa(G, Nemo.Ring) ? one(G) : G())
+
    @time E4, sizes = Groups.generate_balls(S, Id, radius=2*radius);
    info(logger, "Balls of sizes $sizes.")
    info(logger, "Reverse dict")