In my day to day work, I find Go very much in the league of efficiency of C, if, for robust and real programs, not beyond. Low level Go code compiles the same a

In my day to day work, I find Go very much in the league of efficiency of C, if, for robust and real programs, not beyond. Low level Go code compiles the same as C code does (yes, C compilers have better optimizers), you have sometimes to pay for some overhead (bounds checks, GC), but that often pales compared doing this by hand in C, when you need a reliable and robust application.