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golang take one element from map

Grotesque Gazelle on Jun 02, 2021

package main

import (
	"fmt"
)

func GetElement(m map[int]string) (key int, value string, ok bool) {
	for key, value = range m {
		return key, value, true
	}
	return key, value, false
}

func PopElement(m map[int]string) (key int, value string, ok bool) {
	for key, value = range m {
		delete(m, key)
		return key, value, true
	}
	return key, value, false
}

func main() {
	m := map[int]string{
		1: "one",
		2: "two",
		3: "three",
	}

	fmt.Println("Taking elements without popping")
	for i := 0; i < 5; i++ {
		k, v, ok := GetElement(m)
		fmt.Println(k, v, ok, m)
	}

	fmt.Println("\nTaking elements with popping")
	for {
		k, v, ok := PopElement(m)
		fmt.Println(k, v, ok, m)
		if !ok {
			break
		}
	}
}

Source: stackoverflow.com

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"golang take one element from map" Code Answer's