A few days ago, a friend of mine posted a question about the Go concurrency control. The question was, "Can we assure that doSomething(0) always runs before doSomething(2)?" The answer would be, "No." We cannot determine the order in which goroutine can run at a preemption point as

Two years ago, some engineers in my company had a study on the book "Hands-on Dependency Injection in Go." Overall, the book was about the famous SOLID principles: Single responsibility principleOpen/closed principleLiskov substitution principleInterface segregation principleDependency inversion principleAt that time, I couldn't get the last one: the dependency inversion