github.com/l3x/learn-fp-go@v0.0.0-20171228022418-7639825d0b71/2-design-patterns/ch04-solid/02_maybe/src/maybe/either.go (about)

     1  package maybe
     2  
     3  type SuccessOrFailure interface {
     4  	Success() bool
     5  	Failure() bool
     6  }