package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?i)(?<!\S)#([0-9a-zA-Z]+)`)
var str = `#ত্বকের উজ্জ্বলতা কী?
#কীভাবে ধরে রাখবেন উজ্জ্বলতা?
#PRP (Vampire Facial) #Chemical Peel #Oxyfacial #Hydrafacial #Glutathione Injection`
var substitution = "<a href="/hashtag/$1">#$1</a>"
fmt.Println(re.ReplaceAllString(str, substitution))
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Golang, please visit: https://golang.org/pkg/regexp/