golang：跨平台path.Dir

 c：\foo 
 

 path.dir（） \  / 

 path.Dir（） /  filepath.Dir（）   

  package main 
 
 import（
fmt
path / filepath
）
 
 func main（）{
 fmt.Println（`filepath.Dir（a / b / c）：`，filepath.Dir（a / b / c））
 fmt.Println（`filepath.Dir（c：\ foo \ bar.exe）：`，filepath .dir（`c：\foo\bar.exe`））
} 
  

在Windows上：

  filepath.Dir（a / b / c）：a \ b 
 filepath .Dir（c：\foo\bar.exe）：c：\ foo 
  

I'd like to use path.Dir() on Unix and Windows with a platform specific directory. Please take a look at the code:path.Dir()

package main

import (
    "fmt"
    "path"
)

func main() {
    fmt.Println(`path.Dir("a/b/c"): `, path.Dir("a/b/c"))
    fmt.Println(`path.Dir("c:\foo\bar.exe"): `, path.Dir(`c:\foo\bar.exe`))
}

This outputs 

path.Dir("a/b/c"):  a/b
path.Dir("c:\foo\bar.exe"):  .

I'd like to get for the second call to path.Dir() (windows) something likepath.Dir()

c:\foo

Is it possible to tell path.dir() to use Windows separators for my program running on windows? Or should I always convert the backslashes \  to forward slashes (/)? What is the preferred strategy here?path.dir()\/

I see where the "problem" is. This discussion at golang-nuts gave me the hint, that path.Dir() always uses / and filepath.Dir() is the function to be used for platform dependent manipulation.path.Dir()/filepath.Dir()

package main

import (
    "fmt"
    "path/filepath"
)

func main() {
    fmt.Println(`filepath.Dir("a/b/c"): `, filepath.Dir("a/b/c"))
    fmt.Println(`filepath.Dir("c:\foo\bar.exe"): `, filepath.Dir(`c:\foo\bar.exe`))
}

on windows:

filepath.Dir("a/b/c"):  a\b
filepath.Dir("c:\foo\bar.exe"):  c:\foo

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