type Item struct { First string `csvplus:"first"` Second int `csvplus:"second"` Third *bool `csvplus:"third"` Forth *time.Time `csvplus:"forth" csvplusFormat:"2006-01"` } // The CSV data we want to unmarshal. // If your data is in a *File (or other io.Reader), use UnmarshalReader(). data := []byte("first,second,third,forth\na,1,,2000-01\nb,2,f,") var items []Item err := csvplus.Unmarshal(data, &items) if err != nil { panic(err) } fmt.Printf("%+v\n", items[0]) fmt.Printf("{First:%s Second:%d Third:%t (dereferenced) Forth:%s}\n", items[1].First, items[1].Second, *items[1].Third, items[1].Forth) // Output: // {First:a Second:1 Third:<nil> Forth:2000-01-01 00:00:00 +0000 UTC} // {First:b Second:2 Third:false (dereferenced) Forth:<nil>}

// YesNoBool is an example field that implements Unmarshaler, it's used in an example. type YesNoBool bool // UnmarshalCSV is an implementation of the Unmarshaler interface, converts a string record to a native // value for this type. func (ynb *YesNoBool) UnmarshalCSV(s string) error { if ynb == nil { return fmt.Errorf("cannot unmarshal into nil pointer") } switch s { case "yes": *ynb = YesNoBool(true) return nil case "no": *ynb = YesNoBool(false) return nil } return fmt.Errorf("unable to convert %s to bool", s) } type Item struct { Name string `csvplus:"name"` Seen *YesNoBool `csvplus:"seen"` // custom type that implements Unmarshaler Agreed YesNoBool `csvplus:"agreed"` // custom type that implements Unmarshaler Timestamp *time.Time `csvplus:"when" csvplusFormat:"2006-01"` } // The CSV data we want to unmarshal, note the custom format. data := []byte("name,seen,agreed,when\nRob,yes,yes,1999-11\nRuss,,no,") var items []Item err := csvplus.Unmarshal(data, &items) if err != nil { panic(err) } for _, item := range items { fmt.Println(item) }

type Item struct { First string `csvplus:"first"` Second int `csvplus:"second"` Third *bool `csvplus:"third"` Fourth *time.Time `csvplus:"fourth" csvplusFormat:"2006-01"` } tm, _ := time.Parse("2006-01", "2000-01") f := false items := []Item{ {"a", 1, nil, &tm}, {"b", 2, &f, nil}, } data, err := csvplus.Marshal(&items) if err != nil { panic(err) } fmt.Println(string(data)) // Output: // first,second,third,fourth // a,1,,2000-01 // b,2,false,