How to import packages in Go language?

In the Go language, other module codes and types are imported through the import statement. The specific steps are as follows: Specify the package path using a relative path or an absolute path. Relative paths are used to import packages in the same directory. Absolute paths are used to import packages in other directories. Each package must have a unique name. Each package path must also be unique. The code in a package is usually organized in .go (source code) and .a (archive) files. Versions of packages can be managed using version control tools.

Guidelines for importing packages in Go language

In Go language, you can access and use packages defined by other modules by importing packages Codes and types. The process of importing a package is simple, just use the import statement in the code file.

Syntax:

import package_path

where package_path is the path of the package to be imported. Package paths can be relative or absolute.

Relative path:

If the package is in the same directory as the current file, you can use a relative path to import:

import "./my_package"

Absolute path :

If the package is located in another directory, you can use the absolute path to import:

import "github.com/my_org/my_package"

Practical case:

The following code is imported A package named fmt, which provides formatted output function:

package main

import "fmt"

func main() {
    fmt.Println("Hello, world!")
}

Notes:

• Package name uniqueness: Each package must have a unique name.
• Package path uniqueness: Each package path must also be unique.
• Organization of code in a package: The code in a package is usually organized in multiple types of files, including .go files (source code) and .a file (archive file).
• Version control of packages: You can use version control tools (such as Git) to manage package versions.

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