Go by Example: Embed Directive

`//go:embed` is a compiler directive that allows programs to include arbitrary files/folders in the binary at build time. Read more about go directives here and about the embed directive here.	package main
Import the `embed` package; if you don’t use any exported identifiers from this package, you can do a blank import with `_ "embed"`.	import ( "embed" )
embed directives accept paths relative to the directory containing the Go source file. This directive embeds the contents of the file into a `string` variable.	//go:embed folder/single_file.txt var fileString string
Or embed the contents of the file into a `[]byte`.	//go:embed folder/single_file.txt var fileByte []byte
We can also embed multiple files or even folders with wildcards. This uses a variable of the embed.FS type, which implements a simple virtual file system.	//go:embed folder/single_file.txt //go:embed folder/*.hash var folder embed.FS
	func main() {
Print out contents of `single_file.txt`.	print(fileString) print(string(fileByte))
Retrieve some files from the embedded folder.	content1, _ := folder.ReadFile("folder/file1.hash") print(string(content1))
	content2, _ := folder.ReadFile("folder/file2.hash") print(string(content2)) }

Use these commands to run the example. (Note: due to limitation on go playground, this example can only be run on your local machine.)	$ mkdir -p folder $ echo "hello go" > folder/single_file.txt $ echo "123" > folder/file1.hash $ echo "456" > folder/file2.hash
	$ go run embed-directive.go hello go hello go 123 456