> For the complete documentation index, see [llms.txt](https://ineelhere.gitbook.io/code-with-go/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ineelhere.gitbook.io/code-with-go/67-embed-directive.md).

# Embed Directive

This Go program uses the `embed` package to embed files and directories into the compiled binary. Let's go through the code with inline comments:

```go
// Importing the embed package.
import (
	"embed"
)

//go:embed folder/single_file.txt
var fileString string // Embedding the content of a single text file as a string.

//go:embed folder/single_file.txt
var fileByte []byte // Embedding the content of a single text file as a byte slice.

//go:embed folder/single_file.txt
//go:embed folder/*.hash
var folder embed.FS // Embedding a directory and its contents.

func main() {
	// Printing the content of the embedded string.
	print(fileString)
	// Printing the content of the embedded byte slice.
	print(string(fileByte))

	// Reading and printing the content of a specific file ("folder/file1.hash") from the embedded directory.
	content1, _ := folder.ReadFile("folder/file1.hash")
	print(string(content1))

	// Reading and printing the content of another file ("folder/file2.hash") from the embedded directory.
	content2, _ := folder.ReadFile("folder/file2.hash")
	print(string(content2))
}

// print function for convenience.
func print(s string) {
	println(s)
}
```

Explanation:

1. **Embedding a Single File as a String and Byte Slice:**
   * `fileString` is a string variable that embeds the content of the file at "folder/single\_file.txt" as a string.
   * `fileByte` is a byte slice variable that embeds the same content as a byte slice.
2. **Embedding a Directory and Its Contents:**
   * `folder` is an `embed.FS` variable that embeds the entire "folder" directory and its contents.
3. **Reading and Printing Embedded Content:**
   * The `main` function prints the content of the embedded string, byte slice, and reads and prints the content of specific files within the embedded directory.
4. **Print Function:**
   * A simple `print` function is defined for convenience to print the embedded content.

This program demonstrates how to embed files and directories into a Go program using the `embed` package.