在不同包中使用路径的便捷方式

Question

I have a program in which I use a lot "../" which is to go one level up in the file system and run some process on the directory with specific name. I have a command line tool in Go.

I have 3 questions

1. there is nicer way to do it instead of “../“
2. is there a const with which I can use instead of “/“
3. if 2 is not available should I create “constants“ under that internal package to share the “/“ between packages since I need it in many place (from diff packages...)

example

   dir.zip("../"+tmpDirName, "../"+m.Id+".zip", "../"+tmpDirName)

Answer 1

1. Set a variable, and use that everywhere:

   path := "../"
   

   or

   path := ".." + string(os.PathSeparator)
   

   then later:

   dir.zip(path+tmpDirName, path+m.Id+".zip", path+tmpDirName)
   

   This makes it very easy to change the path in the future, via a command line option, configuration, or just editing the value.

2. Yes. os.PathSeparator is the OS-specific path separator for the current architecture.

3. n/a