GoLang Snippets

element-exists-in-slice.go

// Go Playground
// https://go.dev/play/p/PxPhvxz5PQh

package main

import "fmt"

func isExists(list []int, item int) bool {

	for _, v:= range list {
		if item == v {
			return true
		}
	}
	return false
}

func main() {

	data := []int{2, 3, 4, 1, 8, 9}

	fmt.Println("data:", data)

	// check if elemet 5 exists
	out := isExists(data, 5)
	fmt.Println("Element 5 exists in", data, out)

	// check if elemet 8 exists
	out = isExists(data, 8)
	fmt.Println("Element 8 exists in", data, out)

}

key-exists-in-map.go

// Go Playground
// https://go.dev/play/p/KvVxbu_acJC

package main

import "fmt"

func main() {

	emp := map[string]string{
		"name": "akash",
		"age":  "26",
		"job":  "contractor",
	}

	fmt.Printf("Emp data : %v\n", emp)

	// Check if key "location" exists
	val, ok := emp["location"]   // ok = false
	fmt.Printf("\nKey 'location' exists: %v\n", ok)

	if ok  {
		fmt.Printf("Emp location is %v\n", val)
	} else {
		fmt.Println("Key location does not exists")
	}


	// Check if key "name" exists
	val, ok = emp["name"]   // ok = true
	fmt.Printf("\nKey 'name' exists: %v\n", ok)

	if ok  {
		fmt.Printf("Emp Name is %v\n", val)
	} else {
		fmt.Println("Key Name does not exists")
	}
}

swap-var-value.go

// Go Playground
// https://go.dev/play/p/oxzzJOcF8JH

package main

import "fmt"

func main() {

	a := 5
	b := 6

	fmt.Println(a, b) // print 5 6

	// Swap the var value like Python
	a, b = b, a

	fmt.Println(a, b) // print 6 5
}