go snippets

examples.go

package main
import (
    "fmt"
    "strings"
    "strconv"
)
// How do you read a struct from a line of text?
type IPerfResult struct {
    date string 
    // ...
    bandwidthBits int64
}
func main() {
    in := "20160314154239,172.17.0.3,34152,172.17.0.2,5001,3,0.0-10.0,33843707904,27074774092"
    slice := StrSlice(strings.Split(in, ","))
    if len(slice) != 9 {
	// Failf("Too many fields in the output: %v",slice)
    }
    parts := IPerfResult{
	slice.Get(0),
	slice.Get(1),
	intOrFail("client port",slice.Get(2)),
	slice.Get(3),
	intOrFail("server port",slice.Get(4)),
	slice.Get(5),
	slice.Get(6),
	intOrFail("transfer port",slice.Get(7)),
	intOrFail("bandwidth port",slice.Get(8)),
    }
    fmt.Println(parts)
}
// Here's how to add a function to a primitive.
type StrSlice []string
func (s StrSlice) Get(i int) string {
    if i >= 0 && i < len(s) {
        return s[i]
    }
    return ""
}
// Example of how to parse an int
value, err := strconv.ParseInt(rawValue,10,64)