Can I import all subpackages within a directory in Go using a wildcard notation?

Importing Subpackages in Go Without Explicitly Importing Each Directory

When working with a project structure that includes multiple subpackages under a single directory, it can be inconvenient to import each subpackage individually. To address this, developers may wonder if there is a way to import all subpackages within a directory using a wildcard notation.

An example provided by a user involves a project with a structure as follows:

main.go (root directory)
|- entities
    |- bar
        |- bar.go
        |- basic.go
        |- req.go

Attempting to import the bar subpackage using a generic notation as shown below triggers a compilation error:

package main

import bar "one/entities/bar/*"

func main(){

}

Unfortunately, Go's import syntax does not support wildcard imports. The error message clarifies that there are no Go files in the specified directory:

src/main/main.go:3:8: no Go files in /home/oleg/codes/oresoftware/oredoc/test/builds/go/src/one/entities/bar

Instead of importing subpackages using wildcards, the recommended approach is to explicitly specify the subpackage to be imported. This ensures that the dependency is clearly defined and can be easily understood by other developers.

For the example provided, the correct import statement would be:

package main

import (
    "log"
    "one/entities/bar/basic"
)

func main(){

    v := basic.Get.Req.Headers{}
    log.Fatal(v)

}

In this case, only the specific subpackage that is required, i.e., basic, is imported. This approach avoids potential dependencies on unused subpackages and keeps the code organized.

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