Download Basic Lisp techniques by Cooper D.J. PDF

By Cooper D.J.

Show description

Read or Download Basic Lisp techniques PDF

Best software development books

Pragmatic Guide to Subversion

In Pragmatic advisor to Subversion , writer Mike Mason stocks the good points and practices that experience made Subversion such a success. all of the forty eight initiatives chosen for the e-book is gifted as a brief two-pager, with a succinct description at the left facet and a brief reference at the correct. The publication is designed for knowledgeable builders.

Lean Architecture: For Agile Software Development

Increasingly more Agile tasks are searching for architectural roots as they fight with complexity and scale - and they are looking light-weight how you can do itStill looking? during this book the authors help you in finding your individual pathTaking cues from Lean development, they can assist steer your venture towards practices with longstanding music recordsUp-front structure?

Empirical research in software engineering : concepts, analysis, and applications

Empirical learn has now turn into an integral part of software program engineering but software program practitioners and researchers usually lack an knowing of ways the empirical methods and practices are utilized within the box. Empirical examine in software program Engineering: suggestions, research, and functions exhibits tips on how to enforce empirical study strategies, strategies, and practices in software program engineering.

Additional resources for Basic Lisp techniques

Sample text

On MSDOS/Windows filesystems, the device slot is also relevant. On the Symbolics platform, which has a more advanced filesystem, the version and host slots also have relevance. The constructor function, make-pathname, takes keyword arguments corresponding to the six possible slots of the pathname. txt" As seen in the above example, the :directory slot is technically a list, whose first is a keyword symbol (either :absolute or :relative), and whose rest is the individual directory components represented as strings.

Defvar and defparameter differ in one important way: if defvar is evaluated with a symbol which already has a global value, it will not overwrite it with a new value. Defparameter, on the other hand, will overwrite it with a new value: 26 CHAPTER 3. THE CL LANGUAGE CL-USER(4): *todays-temp* 90 CL-USER(5): *todays-humidity* 70 CL-USER(6): (defparameter *todays-temp* 100) *TODAYS-TEMP* CL-USER(7): (defvar *todays-humidity* 50) *TODAYS-HUMIDITY* CL-USER(8): *todays-temp* 100 CL-USER(9): *todays-humidity* 70 *todays-humidity* did not change because we used defvar, and it already had a previous value.

Some of the packages covered in this chapter are commercial extensions to Common Lisp as provided with Franz Inc’s Allegro CL, and some of them are available as open-source offerings. 1 Interfacing with the Operating System One of the most basic means of interacting with the outside world is simply to invoke commands at the operating system level, in similar fashion to Perl’s “system” command. osi:command-output1 . osi:command-output "ls") When invoked in this fashion, this function returns the the Standard Output from the shell command as a string.

Download PDF sample

Basic Lisp techniques by Cooper D.J.


by David
4.5

Rated 4.17 of 5 – based on 35 votes