Answers for "how to iterate over a struct in golang"

Go
1

golang iterate via structure fields

package main

import (
	"fmt"
	"reflect"
)

type person struct {
	firsName string
	lastName string
	iceCream []string
}

func main() {
	u := struct {
		myMap    map[int]int
		mySlice  []string
		myPerson person
	}{
		myMap:   map[int]int{1: 10, 2: 20},
		mySlice: []string{"red", "green"},
		myPerson: person{
			firsName: "Esmaeil",
			lastName: "Abedi",
			iceCream: []string{"Vanilla", "chocolate"},
		},
	}
	v := reflect.ValueOf(u)
	for i := 0; i < v.NumField(); i++ {
		fmt.Println(v.Type().Field(i).Name)
		fmt.Println("\t", v.Field(i))
	}
}
Posted by: Guest on November-22-2021
0

iterate over iterator golang

func printEvenNumbers(max int) {
    iter := NewEvenNumberIterator(max)
    for iter.Next() {
        fmt.Printf("n: %d\n", iter.Value())
    }
    if iter.Err() != nil {
        log.Fatalf("error: %s\n", iter.Err())
    }
}
Posted by: Guest on February-19-2021

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