package main
import (
"encoding/csv"
"fmt"
"io/ioutil"
"log"
"os"
)
func writeCSV() error {
f, err := os.Create("stocks_tmp.csv")
if err != nil {
return err
}
w := csv.NewWriter(f)
records := [][]string{
{"date", "price", "name"},
{"2013-02-08", "15,07", "GOOG"},
{"2013-02-09", "15,09", "GOOG"},
}
for _, rec := range records {
err = w.Write(rec)
if err != nil {
f.Close()
return err
}
}
// csv.Writer might buffer writes for performance so we must
// Flush to ensure all data has been written to underlying
// writer
w.Flush()
// Flush doesn't return an error. If it failed to write, we
// can get the error with Error()
err = w.Error()
if err != nil {
return err
}
// Close might also fail due to flushing out buffered writes
err = f.Close()
return err
}
func main() {
writeCSV()
d, err := ioutil.ReadFile("stocks_tmp.csv")
if err != nil {
log.Fatalf("ioutil.ReadAll() failed with '%s'\n", err)
}
fmt.Printf("%s\n", string(d))
os.Remove("stocks_tmp.csv")
}
