Go samples

sample.go

//main.go
package main

import (
	"fmt"
	"time"
	"awesomeProject/another"
)


func Index(vs []string, t string) int {
	for i, v := range vs {
		fmt.Println(v)
		if v == t {
			return i
		}
	}
	return -1
}


func Any(vs []string, f func(string) bool) bool {
	for _, v := range vs {
		if f(v) {
			return true
		}
	}
	return false
}


type AutoGenerated []struct {
	Name       string    `json:"Name"`
	ExpiryDate time.Time `json:"ExpiryDate"`
	Price      float64   `json:"Price"`
}

type opt struct {
	shortnm      byte
	longnm  	 string
	needArg      bool
}

func main() {
	/*var strs = []string{"peach", "apple", "pear", "plum"}

	var start = time.Now()

	fmt.Println("Helo world  %s", start)


	fmt.Println(another.Foobar(2))

	elapsed := start.Sub(start)

	fmt.Println(elapsed)

	fmt.Println(Index(strs, "pear"))

	var s = Any(strs, func(v string) bool {
		return strings.HasPrefix(v, "p")
	})

	fmt.Println(s)

	//s1 := make([]AutoGenerated, 1)

	//s1[0] =

	var basenameOpts = []opt {
		{
			shortnm: 'a',
			longnm: "multiple",
			needArg: false,
		},
		{
			shortnm: 'b',
			longnm: "b-option",
			needArg: false,
		},
	}

	var basenameOpts1 = []opt{}

	for i := 0; i < 47; i++ {
		n := opt{longnm: "F "}
		basenameOpts1 = append(basenameOpts1,n)
	}

	for i, _ := range basenameOpts {
		basenameOpts[i].longnm = basenameOpts[i].longnm + " something"
		fmt.Println(basenameOpts[i].longnm,basenameOpts[i].shortnm)
	}*/

	another.GetData()
	another.DictionaryMap()
}
//https://gobyexample.com/collection-functions
//https://mholt.github.io/json-to-go/
//https://gobyexample.com/slices
//https://blog.golang.org/json-and-go
//https://www.tutorialspoint.com/go/go_function_as_values.htm
//https://www.dotnetperls.com/container-list-go
//https://blog.alexellis.io/golang-json-api-client/

//another.go
package another //create folder called another/another.go
import (
	"net/http"
	"time"
	"log"
	"io/ioutil"
	"encoding/json"
	"fmt"
)

type people1 struct {
	Number int `json:"number"`
	Message string `json:"Message"`
}

type AutoGeneratedPerson struct {
	People []struct {
		Name  string `json:"name"`
		Craft string `json:"craft"`
	} `json:"people"`
	Number  int    `json:"number"`
	Message string `json:"message"`
}

func Foobar(i int) int {
	return i + 1;
}

/*
Get Some json data from a URL and deserialize to object and print
 */
func GetData(){

	url := "http://api.open-notify.org/astros.json"

	httpClient := http.Client{
		Timeout: time.Second * 2, // Maximum of 2 secs
	}

	req, error := http.NewRequest(http.MethodGet, url, nil)

	if error != nil {
		log.Fatal(error)
	}

	req.Header.Set("User-Agent", "spacecount-tutorial")

	res, error := httpClient.Do(req)
	if error != nil {
		log.Fatal(error)
	}

	body, error := ioutil.ReadAll(res.Body)

	if error != nil {
		log.Fatal(error)
	}

	personList := AutoGeneratedPerson{}
	jsonErr := json.Unmarshal(body, &personList)
	if jsonErr != nil {
		log.Fatal(jsonErr)
	}

	fmt.Println(personList.Message)

	for _,p := range personList.People {
		fmt.Println(p.Name, p.Craft)
	}
}

func DictionaryMap() { //https://blog.golang.org/go-maps-in-action
	var m map[string]int = make(map[string]int)
	m["route"] = 70
	m["route"] = 78

	for key, value := range m {
		fmt.Println("Key:", key, "Value:", value)
	}
}