O'Reilly logo

Practical Common Lisp by Peter Seibel

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

CHAPTER 15Practical: A PortablePathname Library

As I discussed in the previous chapter, Common Lisp provides an abstraction, the pathname, that's supposed to insulate you from the details of how different operating systems and file systems name files. Pathnames provide a useful API for manipulating names as names, but when it comes to the functions that actually interact with the file system, things get a bit hairy.

The root of the problem, as I mentioned, is that the pathname abstraction was designed to represent filenames on a much wider variety of file systems than are commonly used now. Unfortunately, by making pathnames abstract enough to account for a wide variety of file systems, Common Lisp's designers left implementers with a fair number ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required