envy.go
func Get(key string, value string) string {
	gil.RLock()
	defer gil.RUnlock()
	if v, ok := env[key]; ok {
		return v
	}
	return value
}
func Get(key string, value string) string {
	gil.RLock()
	defer gil.RUnlock()
	if v, ok := env[key]; ok {
		return v
	}
	return value
}
func Get ( key string , value string ) string { gil . RLock ( ) defer gil . RUnlock ( ) if v , ok := env [ key ] ; ok { return v } return value }
// Get a value from the ENV. If it doesn't exist the
// default value will be returned.
Get a value from the ENV . If it doesn t exist the default value will be returned .