Rachel goland how to#
Rachel goland install#
Rachel goland mod#
Rachel goland code#

In this tutorial, the main function will print out Hello, Modules! when run. The fileвЂ™s name isnвЂ™t as important as the main function inside, but matching the two makes it easier to find. The main.go file is commonly used in Go programs to signal the starting point of a program.

Rachel goland code#

To ensure the module is created correctly and to add code so you can run your first Go module, youвЂ™ll create a main.go file within the mymodule directory. ItвЂ™s time to take your module further and add some code.

Rachel goland mod#

YouвЂ™ve now created a Go module with go mod init and looked at what an initial go.mod file contains, but your module doesnвЂ™t do anything yet. In this case, since the module was created using Go 1.16, the go directive says 1.16: go 1.16ДЄs more information is added to the module, this file will expand, but itвЂ™s a good idea to look at it now to see how it changes as dependencies are added further on. The only other line in the file at this point, the go directive, tells Go which version of the language the module is targeting. The mymodule value comes from the parameter you passed to go mod init: module mymodule The first line, the module directive, tells Go the name of your module so that when itвЂ™s looking at import paths in a package, it knows not to look elsewhere for mymodule. This command will return the following output when creating the module: Now create the module by running go mod init from the mymodule directory and provide it with the moduleвЂ™s name, mymodule: To do this, youвЂ™ll use the go toolвЂ™s mod init command and provide it with the moduleвЂ™s name, which in this case is mymodule. The next step is to create a go.mod file within the mymodule directory to define the Go module itself. Once youвЂ™ve created the module directory, the directory structure will look like this: в””в”Ђв”Ђ projects In your projects directory, run the following command to create the mymodule directory: Usually, the moduleвЂ™s top-level directory name is the same as the module name, which makes things easier to keep track of. Next, youвЂ™ll create the module directory itself. If youвЂ™re using the command line, begin by making the projects directory and navigating to it: You can create the projects directory either through an IDE or via the command line. You may already have a directory for your projects, but in this tutorial, youвЂ™ll create a directory called projects and the new module will be called mymodule. With the introduction of Go modules, it became possible for Go projects to be located anywhere on the filesystem, not just a specific directory defined by Go. The first thing to do is decide the directory the module will live in. These files contain information the go tool uses to keep track of your moduleвЂ™s configuration, and are commonly maintained by the tool so you donвЂ™t need to.

A module has a number of Go code files implementing the functionality of a package, but it also has two additional and important files in the root: the go.mod file and the go.sum file.

Rachel goland how to#

To learn more, follow the How To Write Packages in Go tutorial.ДЄt first glance, a Go module looks similar to a Go package. Familiarity with writing packages in Go.

Rachel goland install#

To set this up, follow the How To Install Go tutorial for your operating system. In addition, you will also add someone elseвЂ™s public module to your own project as well as add a specific version of that module to your project. In this tutorial, you will create your own public Go module and add a package to your new module. Go modules solve many problems with GOPATH, the original system, by allowing users to put their project code in their chosen directory and specify versions of dependencies for each module. Go modules commonly consist of one project or library and contain a collection of Go packages that are then released together.

Go modules were added in response to a growing need to make it easier for developers to maintain various versions of their dependencies, as well as add more flexibility in the way developers organize their projects on their computer. In version 1.13, the authors of Go added a new way of managing the libraries a Go project depends on, called Go modules. The author selected the Diversity in Tech Fund to receive a donation as part of the Write for DOnations program.