read from file

readFileContent.go

func Content(filename string) (string, error) {
        f, err = os.Open(filename)
        if err != nil {
                return nil, err
        }
        defer f.Close()
        
        var result []byte
        buf := make([]byte, 100)
        for {
                n, err := f.Read(buf[0:])
                result = append(result, buf[0:n]...)
                if err != nil {
                        if err == io.EOF {
                                break
                        }
                        return nil, err
                }
        }
        return string(result), nil
}