class C1 def m 1 end end class C2 def m 2 end end o1 = C1.new o2 = C2.new i=0 while i<6_000_000 # benchmark loop 2 o = (i % 2 == 0) ? o1 : o2 # o.m; o.m; o.m; o.m; o.m; o.m; o.m; o.m i+=1 end