import (
"unicode"
) func Ucfirst(str string) string {
for i, v := range str {
return string(unicode.ToUpper(v)) + str[i+1:]
}
return ""
} func Lcfirst(str string) string {
for i, v := range str {
return string(unicode.ToLower(v)) + str[i+1:]
}
return ""
}