nf, err := os.Create("results.txt")
if err != nil {
panic(err)
}
defer func() {
err := nf.Close()
if err != nil {
panic(err)
}
}()
timeOfUpdate := time.Now()
_, err = fmt.Fprintf(nf, "File last time updated - %v\n", timeOfUpdate.Format("2006.01.02 15:04:05"))
if err != nil {
panic(err)
}
length := len(results)
_, err = fmt.Fprintf(nf, "Reisai without GPS - %v\n", length)
if err != nil {
panic(err)
}
for key, value := range results {
_, err := fmt.Fprintf(nf, "Bus number: %v\n Full bus info: %v\n", key, value)
if err != nil {
panic(err)
}
nf.Sync()
}I am using code like this to print data to file and I want to keep adding data to file not rewrite him every time.
I think my problem is that every time I launch this KingPing case I create file
nf, err := os.Create("results.txt")
if err != nil {
panic(err)
}
defer func() {
err := nf.Close()
if err != nil {
panic(err)
}
}()My full KingPin case :
case results.FullCommand():
rp := reisai.NewReisaiParser(&reisai.ReisaiParserOpts{MinutesSinceMidnight: mins.GetMinutesSinceMidnight()})
reisai1, err := rp.ParseDefaultReisai()
if err != nil {
panic(err)
}
ep := gps.NewGpsParser(&gps.GpsParserOpts{})
gps1, err := ep.ParseDefaultGps()
if err != nil {
panic(err)
}
analysis.Analyze(gps1, reisai1)
results := make(map[string]*reisai.ReisaiDataRow)
for NewMap, reisai := range reisai1 {
results[NewMap] = reisai
}
nf, err := os.Create("results.txt")
if err != nil {
panic(err)
}
defer func() {
err := nf.Close()
if err != nil {
panic(err)
}
}()
timeOfUpdate := time.Now()
_, err = fmt.Fprintf(nf, "File last time updated - %v\n", timeOfUpdate.Format("2006.01.02 15:04:05"))
if err != nil {
panic(err)
}
length := len(results)
_, err = fmt.Fprintf(nf, "Reisai without GPS - %v\n", length)
if err != nil {
panic(err)
}
for key, value := range results {
_, err := fmt.Fprintf(nf, "Bus number: %v\n Full bus info: %v\n", key, value)
if err != nil {
panic(err)
}
nf.Sync()
}
fmt.Println("List of not working GPS systems has been updated and saved into file results.txt")
}