How Should I Name My Go Files?

Naming Conventions for Go Filenames

In Go, naming conventions play a significant role in ensuring consistency and readability within codebases. While the naming conventions for packages are well-defined (no underscores, lowercase), the rules for filenames are somewhat flexible.

Underscores in Filenames

Unlike packages, filenames in Go do not adhere to the same no-underscore convention. Instead, it is common practice to use underscores to separate words in filenames, especially for longer or more complex names. For instance, instead of using "webserver.go," you could opt for "web_server.go."

Struct-to-File Mapping

As for the relationship between structs and files, Go language does not enforce a one-struct-per-file approach as seen in Java. It is entirely acceptable to group multiple structs within a single file if they are logically related. However, for the sake of organization and maintainability, many developers prefer to keep each struct in its own file, especially for larger projects.

Special Suffixes

Go employs specific file suffixes to indicate certain properties:

• . (dot): Files starting with a dot are hidden to the go tool.
• _test.go: Files with this suffix are used for writing and running unit tests and are invoked by the go test tool.
• _platform_architecture.go: Files with this suffix will only be compiled and run on the specified platform and architecture (e.g., name_linux.go will build only on Linux).

These suffixes allow for granular control over the compilation and execution of files based on platform and architecture requirements.

Refer to the official Go documentation (https://pkg.go.dev/cmd/go) for more detailed information on file naming conventions and other Go programming guidelines.

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