Go language basic filepath package

The filepath package
Abs()
gets the absolute path: the current project is used as a reference in the program.
IsAbs()
determines whether it is an absolute path
Absolute path: Absolute
starts from the drive letter to describe
Relative path: Relative

relative to the reference

    fmt.Println(filepath.IsAbs( "aa.txt" )) //false
     fmt.Println(filepath.IsAbs( "C:\\liu\\pro\\aa.txt" )) //true
     fmt.Println( filepath.Abs( "aa.txt" )) //C:\Ruby\workspace\workspace1802\src\day12_file\aa.txt
 <nil>
 /*
 mac system file path
 /User/liu/documents/aa.txt under mac , on the selected file, command+i, to view the information of the file
   Location
 : */