Path Join and Clean

path.Join and path.Clean build predictable slash-separated paths from pieces.

path_join_clean.go

package main

import (
	"fmt"
	"path"
)

func main() {
	var folder = 
	joined := path.Join("data", folder, "today.txt")
	messy := "data/" + folder + "/../" + folder + "/today.txt"
	cleaned := path.Clean(messy)

	fmt.Println("folder=", folder)
	fmt.Println("joined=", joined)
	fmt.Println("cleaned=", cleaned)
	fmt.Println("same=", joined == cleaned)
}

package main

import (
	"fmt"
	"path"
)

func main() {
	var folder = 
	joined := path.Join("data", folder, "today.txt")
	messy := "data/" + folder + "/../" + folder + "/today.txt"
	cleaned := path.Clean(messy)

	fmt.Println("folder=", folder)
	fmt.Println("joined=", joined)
	fmt.Println("cleaned=", cleaned)
	fmt.Println("same=", joined == cleaned)
}

package main

import (
	"fmt"
	"path"
)

func main() {
	var folder = 
	joined := path.Join("data", folder, "today.txt")
	messy := "data/" + folder + "/../" + folder + "/today.txt"
	cleaned := path.Clean(messy)

	fmt.Println("folder=", folder)
	fmt.Println("joined=", joined)
	fmt.Println("cleaned=", cleaned)
	fmt.Println("same=", joined == cleaned)
}

path handling Path helpers avoid hand-building separators and normalize redundant path pieces.