> My cardinal rule in Go is just don't use interfaces unless you really, really need to and there's no other way. They do make some sense for swappable doodahs

> My cardinal rule in Go is just don't use interfaces unless you really, really need to and there's no other way. They do make some sense for swappable doodahs - like buffers / strings / filehandles you can write to - but those tend to be in the lower levels (libraries) rather than application code.