Most generics work by monomorphisation, which basically means the compiler is doing a copy paste from int_btree.go to string_btree.go with the types changed. Th

Most generics work by monomorphisation, which basically means the compiler is doing a copy paste from int_btree.go to string_btree.go with the types changed. There is no runtime cost except text segment bloat. Generally modern compilers are smart enough to unify the identical machine code paths too, so you might not even get the code bloat.