[Go] get file extension

filepath 를 알고 있을 때 ext 추출

참고 https://pkg.go.dev/path/filepath

filepath package - path/filepath - Go Packages

 

import (
	"fmt"
	"path/filepath"
)

func main() {
	ext := filepath.Ext("/tmp/test.go")
	fmt.Println("ext 1:", ext)

	ext = filepath.Ext("./hello.png")
	fmt.Println("ext 2:", ext)
}


// ext 1: .go
// ext 2: .png