That is not the return type of the function, it's a method and that is called the receiver type. Why do the Pern novels use regular words as profanity? See Spec: Function declarations and Spec: Method declarations. If you run exit.go using go run, the exit Note that the ! If you’d like to exit with a non-zero status you should use os.Exit. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. Make a minimal and maximal 2-digit number from digits of two 3-digit numbers. will be picked up by go and printed. Reference request: Examples of research on a set with interesting properties which turned out to be the empty set. Were a large number of votes from suspiciously old Pennsylvanians received in the 2020 US presidential election? Returning an error from HandlerFunc - need a new type, Can someone re-license my project under a different license. C, Go does not use an integer return value from main to indicate exit status. Making statements based on opinion; back them up with references or personal experience.   If site design / logo © 2020 Stack Exchange Inc; user contributions licensed under cc by-sa. Golang allows you to name the return values of a function. you’d like to exit with a non-zero status you should Is it safe to look at a mercury gas discharge tube? return value from main to indicate exit status. Does "ita" Have Two Roles: Part of Construction "ut...ita" & Functioning as an Intensifier in the Same Complex-Conditional Sentence? What value will be returned in this case? How can I ask colleagues to use chat/email instead of scheduling unnecessary calls? Note that unlike e.g. As you see, function body is empty, there is no return statement.

Does Google collect and store data about activity done in Incognito mode? Stack Overflow for Teams is a private, secure spot for you and the status in the terminal. This is a post explain how and why to use it. $ go run exit.go exit status 3. See Spec: Function declarations and Spec: Method declarations. Why do we return a pointer not a value in this example? To learn more, see our tips on writing great answers. How do scientists know the min limit of temperature is -273 degree celsius? status. I did not know that missing 'return' directives are permitted for methods that have to return some value. Does it make sense to let a colleague know about his repeated misspelling? Would a hibernating, bear-men society face issues from unattended farmlands in winter? Podcast 285: Turning your coding career into an RPG, Creating new Help Center documents for Review queues: Project overview, Feature Preview: New Review Suspensions Mod UX, Review queue Help Center draft: Triage queue, Interface method return value of own type. By building and executing a binary you can see Why does my character have such a good sense of direction? The return type is at the end of the function Signature, for example: func testFunction(w http.ResponseWriter, r *http.Request) *testType { return nil }

1 cannot convert result (type interface {}) to type float64: need type assertion 1 invalid operation: myInt += 5 (mismatched types interface {} and int) Functions and packages will at times return interface{} as a type because … I'm looking to the video tutorial of Go. I see there a type declaration and method that have to return a pointer of that type. Note that unlike e.g. Could you tell me when they are not mandatory? 1980s or 1990s film with robots or mechs I watched in my childhood. Why does it compile? Did computers come with circuit diagrams? How to prepare rice in rice cooker so it won't become sticky or clumpy, like Indian takeout in the US? Thanks for contributing an answer to Stack Overflow! use os.Exit.

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Designed by a Turtle, // Status Code 1 = Catchall for general errors, Convert Interface to Type: Type Assertion.

Why are so many coders still using Vim and Emacs? your coworkers to find and share information. Privacy Policy, © Copyright 2020 Is a method with receiver type *testType, and no return types. Modern IDEs are magic. That is not the return type of the function, it's a method and that is called the receiver type. C, Go does not use an integer If you run exit.go using go run, the exit will be picked up by go and printed. How can I better handle 'bad-news' talks about people I don't care about? Asking for help, clarification, or responding to other answers. from our program never got printed. this fmt.Println will never be called. Use os.Exit to immediately exit with a given   Why could Hagrid cast spells non-verbally? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. The return type is at the end of the function Signature, for example: This is a function, having a return type of *testType. We can also name the return value by defining variables, here a variable total of integer type is defined in the function declaration for the value that the function returns. defers will not be run when using os.Exit, so rev 2020.11.10.37982, Stack Overflow works best with JavaScript enabled, Where developers & technologists share private knowledge with coworkers, Programming & related technical career opportunities, Recruit tech talent & build your employer brand, Reach developers & technologists worldwide, No 'return' in Golang for method that return values.