go package is not a main packagego package is not a main package

All files created inside the lib folder belongs to lib package. What a UPS strike would mean for you and your packages - USA TODAY Term meaning multiple different layers across many eras? 592), How the Python team is adapting the language for an AI future (Ep. The intro/sample go progs I've seen and experimented with start with. When we move to ~/Documents/learnpackage/, there is a go.mod file there and our module name is learnpackage in that go.mod file. Does glide ratio improve with increase in scale? Would be grateful if someone provides a solution? This tutorial is for Go version 1.13 or later and uses Go modules. A car dealership sent a 8300 form after I paid $10k in cash for a car. Supports reading and writing spreadsheet documents generated by Microsoft Excel 2007 and later. To learn more, see our tips on writing great answers. Read with auto-increment key names. From that directory run. When you build shared libraries, you will not have any main package and main function in the package. Perhaps consider using github.com/google/uuid which does. To learn more, see our tips on writing great answers. p is negative. When running go build in the main package folder, everything works and the binary is generated. The order of initialization of a package is as follows. The packages that are created by yourself, and third-party packages which you have imported, are available in the GOPATH location. You need to specify in your app.yaml file what your app access point is. GO111MODULE=on go build forces the old school GOPATH type build, which pulls the latest commits for all imports. The above command will take us to the simpleinterest directory. That's it for packages. Hopefully it's not too silly Reddit, Inc. 2023. An error occurred How To Write Packages in Go | DigitalOcean It calculates and returns the simple interest. However, when building only the ui module, it gives the following compilation error: You can check https://github.com/satori/go.uuid to see that the function returns two values. Inside this directory run the following command to create a go module named learnpackage. That is, it indicates that the package contains code that can be . Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, The future of collective knowledge sharing. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. What has me puzzled is that building the main package works, but the module doesn't. What is the most accurate way to map 6-bit VGA palette to 8-bit? 593), Stack Overflow at WeAreDevelopers World Congress in Berlin, Temporary policy: Generative AI (e.g., ChatGPT) is banned. Just want to make sure though. Is it a threat, a useful tool, or accelerated ignorance building the latest giant ball of mudonly faster? It will fail with the following error. The latest commit (which go modules infers a pseudo dot release version of v1.2.1-0.20181028125025-b2ce2384e17b) has code that matches the README.md. By clicking Sign up for GitHub, you agree to our terms of service and You signed in with another tab or window. Another question, I know main function is the entry point of the program, you need it. 593), Stack Overflow at WeAreDevelopers World Congress in Berlin, Temporary policy: Generative AI (e.g., ChatGPT) is banned. Let's understand the reason behind this error. cmd/go: go install should warn or error if none of its - GitHub 1/53 How To Code in Go eBook 2/53 How To Install Go and Set Up a Local Programming Environment on Ubuntu 18.04 3/53 How To Install Go and Set Up a Local Programming Environment on macOS 4/53 How To Install Go and Set Up a Local Programming Environment on Windows 10 5/53 How To Write Your First Program in Go 6/53 Understanding the GOPATH Is it proper grammar to use a single adjective to refer to two nouns of different genders? It becomes impossible to reuse and maintain code written this way. About 28% was shipped by the United States Postal Service (USPS) and 8% by UPS, according to Pitney Bowes. Why is a dedicated compresser more efficient than using bleed air to pressurize the cabin? Not the answer you're looking for? Use package main as first line instead. You can now receive a free 2 comments on Apr 25, 2022 Imagine-Brian added the type:docs label on Apr 25, 2022 s1na closed this as completed on Apr 26, 2022 Sign up for free to join this conversation on GitHub . Not the answer you're looking for? Compilation error only building a module, not main package, What its like to be on the Python Steering Council (Ep. 3, we import the fmt package to use the Println function. Click on this link, the example at the bottom of the page didn't use package main and main function, and it still works. Also to clarify, this question has nothing to do with go modules and I am running golang 1.13. Hello, World! rev2023.7.24.43543. Features Load from multiple data sources (file, []byte, io.Reader and io.ReadCloser) with overwrites. Hence when the init function runs, the program terminates after printing Principal is less than zero. In the Code Listing -1, we have imported the package fmt into the sample program for using the function Println. go - Golang func main() in packages other than main? - Stack Overflow What is the most accurate way to map 6-bit VGA palette to 8-bit? The following command in the terminal will install mgo, a third-party Go driver package for MongoDB, into your GOPATH, which can be used across the projects put on the GOPATH directory: After installing the mgo, put the import statement in your programs for reusing the code, as shown below: The MongoDB driver, mgo, provides two packages that we have imported in the above import statement. The following will be the contents of the file. An in-depth tutorial about declaring and defining structs. A workspace contains three subdirectories at its root: You have to specify the location of the workspace before developingGo programs. If you steal opponent's Ring-bearer until end of turn, does it stop being Ring-bearer even at end of turn? Having 5, 10 or even 20 files and thousands of lines of code in the same package is not uncommon or an anti-pattern in Go. When you import packages, the Go compiler will look on the locations specified by the environment variable GOROOT and GOPATH. Can my package name be anything or it always needs to be main? 592), How the Python team is adapting the language for an AI future (Ep. Am I in trouble? How does Genesis 22:17 "the stars of heavens"tie to Rev. Error: package command-line-arguments is not a main package Is this mold/mildew? Difference in meaning between "the last 7 days" and the preceding 7 days in the following sentence in the figure", Reason not to use aluminium wires, other than higher resitance. In the terminal window, go to the location lib folder, and run the following command: The go install command will build the package lib which will be available at the pkg subdirectory of GOPATH. This is because the go build command takes as its [packages] argument a list of import paths, or a list of .go files. I already got it working with the webserver and tcpserver reading from each other(without the main package in the middle), but I want to keep some parts of the application at one place. In Go, source files are organized into system directories called packages, which enable code reusability across the Go applications. If we imported a package and are not using the package identifier in the program, Go compiler will show an error. The Teamsters Union has been in an ongoing labor dispute with UPS management, and if they do not reach an agreement by August 1, UPS workers represented by the Teamsters will go on strike. For . The language specification does not give special meaning to the name main outside of this context. This has a special meaning in Go. Why is a dedicated compresser more efficient than using bleed air to pressurize the cabin? Connect and share knowledge within a single location that is structured and easy to search. It does accept bug fixes and version compatability changes provided by the community. Is the the thing I want possible(Via the main package)? with log repo, Go get error while getting major version module dependency, go: module found but does not contain package. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. How to Install a package with GO get? - GeeksforGeeks Choosing the Right Database Strategy: On Premises or Cloud? To see all available qualifiers, see our documentation. When that function invocation returns, the program exits. In our case the module name is learnpackage and the package simpleinterest is in the simpleinterest folder directly under learnpackage. How can I define a sequence of Integers which only contains the first k integers, then doesnt contain the next j integers, and so on. But the version of go redis changes to v6.15.9+incompatible in go.mod file automatedly. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, The future of collective knowledge sharing. Compilation error only building a module, not main package (A modification to) Jon Prez Laraudogoitas "Beautiful Supertask" What assumptions of Noether's theorem fail? How to call package from a different package, Using function from `main` package into main.go file. We will structure the code in such a way that all functionalities related to simple interest are in simpleinterest package. init function is called next. You switched accounts on another tab or window. How can I animate a list of vectors, which have entries either 1 or 0? Does the US have a duty to negotiate the release of detained US citizens in the DPRK?