Dear friend 3702, while you are at it, please change that string appending
strategy. Use a bufio.Buffer instead. It's way faster.
> type bad.go
package main
import (
"fmt"
"time"
)
func main() {
var s string
begin := time.Now()
for i := 0; i != 100000; i++ {
s = s + "lalalala"
}
fmt.Printf("len = %d, %d ns\n", len(s),
time.Now().UnixNano()-begin.UnixNano())
}
> bad.exe
len = 800000, 3573571400 ns
> bad.exe
len = 800000, 3564547900 ns
> bad.exe
len = 800000, 3657745100 ns
> type good.go
package main
import (
"bytes"
"fmt"
"io"
"time"
)
func main() {
var b bytes.Buffer
begin := time.Now()
for i := 0; i != 100000; i++ {
io.WriteString(&b, "lalalala")
}
s := b.String()
fmt.Printf("len = %d, %d secs\n", len(s),
time.Now().UnixNano()-begin.UnixNano())
}
> good.exe
len = 800000, 2991600 secs
> good.exe
len = 800000, 4002600 secs
> good.exe
len = 800000, 3001800 secs
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