Go

https://go.dev/

Warning: This section is under construction

How to create a file if its directories don't exist

Assume a bare file structure like the following, and I want to create a file like ./foo/bar/baz.txt:

main.go

import (
	"log"
	"os"
	"path/filepath"
)

func main() {
	file := "foo/bar/baz.txt"

	parentDir := filepath.Dir(file)
	if _, err := os.Stat(parentDir); errors.Is(err, os.ErrNotExist) {
		err := os.MkdirAll(parentDir, os.ModePerm)
		if err != nil {
			log.Println(err)
		}
	}
}

Slice Stuff

https://go.dev/play/p/U85ZMhz3hCA

// You can edit this code!
// Click here and start typing.
package main

import "fmt"

type Node struct {
	Value string
}

func main() {
	n1 := Node{"1"}
	n2 := Node{"2"}
	edges := make(map[Node][]*Node)
	fmt.Println(fmt.Sprintf("%+v", edges))

	edges[n1] = []*Node{&n2}
	edges[n2] = make([]*Node, 0)

	fmt.Println(fmt.Sprintf("%+v", edges[n1]))
	fmt.Println(fmt.Sprintf("%+v", edges[n2]))

	fmt.Println("---")
	fmt.Println(fmt.Sprintf("%+v", edges))
}