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V for Go developers

Turiiya edited this page 2024-04-10 02:45:45 +02:00

Go	V
Hello World
package main import "fmt" func main() { fmt.Println("Hello World!") }	println('Hello World!')
Slice initialization
numbers := []int{1, 2, 3, 4}	numbers := [1, 2, 3, 4]
Add an element to a slice
numbers = append(numbers, 5)	numbers << 5
Printing a slice
fmt.Println(numbers)	println(numbers)
Filtering a slice
even := make([]int, 0) for _, num := range numbers { if num % 2 == 0 { even = append(even, num) } }	even := numbers.filter(it % 2 == 0)
Checking if a slice contains an element
contains := false for _, num := range numbers { if num == x { contains = true break } }	contains := x in numbers
Reading a file
import ( "io/ioutil" "log" ) b, err := ioutil.ReadFile(path) if err != nil { log.Println(err) return } text := string(b)	import os text := os.read_file(path) or { eprintln(err) return }
Testing a function
package greeter_test import ( "testing" ) func TestHello(t *testing.T) { if Hello() != "Hello" { t.Fatalf("Hello() failed") } }	fn test_hello() { assert hello() == 'hello' }