util/

package chainlock implements a mutex whose Lock and Unlock methods return the lock itself, to enable chaining.

Package choice implements a flag.Value type that accepts a set of choices.

package devnoop provides an io.ReadWriteCloser that never errors and always reports reads / writes to / from buffers as complete.

Package nodefault provides newtypes around builtin Go types so that if the newtype is used as a field in a struct and that field is zero-initialized (https://golang.org/ref/spec#The_zero_value), accessing the field will cause a null pointer deref panic.