Q:

How to get the file name extension used by path in Golang?

belongs to collection: Golang path/filepath Package Programs

YasminRadwan26
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2022-07-05
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In the Go programming language, to get the file name extension used by the given path – we use the Ext() function of path/filepath package. The Ext() function returns the file name extension used by the given path. The extension is the suffix beginning at the final dot in the final element of the given path; it is empty if there is no dot.

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YasminRadwan26
2022-07-05
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Syntax:

func Ext(path string) string

Consider the below Golang program demonstrating get the file name extension used by the given path?

package main

import (
	"fmt"
	"path/filepath"
)

func main() {
	ext1 := filepath.Ext("/tmp/test.go")
	fmt.Println("ext1:", ext1)

	ext2 := filepath.Ext("./picture1.jpg")
	fmt.Println("ext2:", ext2)
}

Output

ext1: .go
ext2: .jpg

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Golang path/filepath Package Programs
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