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Tips and Tricks and Other

Various

• Code Snippets - useful small functions.


• Project Euler newLISP - the first 20 from projecteuler.net/problems.


• Install newLISP as an HTTP and net-eval server process on macOS using launchd


• Combined OS shell and newLISP shell with NLS. Now working on all platforms.


• Write FOOP (Functional Object Oriented Programming) applications. The Mandelbrot set as a FOOP application using complex numbers.

Web

• Write CGI scripts in newLISP: Mandelbrot, environment, read form data, syntax highligher, this site on newLISP Wiki


• AJAX and newLISP: do asynchronous webpage updates with newLISP CGI scripting.


• A small CGI example how to set cookies: Cookie example.


• S-expressions to XML - translate LISP s-expressions into XML.


• File Upload Script - a newLISP CGI script for uploading files from a HTML form.


• Translate IP numbers to country of origin.

Connect to other languages and libraries

• Import console functions on Windows using Windows Console Goodies.


• Tk and newLISP - run graphics Tcl/Tk using this wrapper.


• Write graphics programs with OpenGL using simple FFI or using the extended FFI.


• How to write a C-import function taking a string and returning an integer array CountCharacters. For more details on working with C-libraries read chapter 23 in Code Patterns in newLISP


• Windows Event Loop - write GUI programs for MS Windows.


• Register a callback with newLISP library (newlisp.dll, newlisp.dylib, newlisp.so).

Network Security

• Userland packet filter in iptables. Using the netfilter_queue_libipq library.


• A network packet sniffer written with libpcap and newLISP.


• A network scanner. newLISP v.10.2.8 or later is required.


• Raw sockets with net-packet when using newLISP for macOS , BSDs and Linux!


• Library to verify YubiKey one time passwords by Kirill. Also available as a module in the Various section.

Parallel and Distributed Processing

• Parallel web page retrieval is easy using the spawn function. The program googles a search term then counts all the words in 20 pages retrieved. Try the demo. Even on a single core CPU this is much faster than working sequentially (macOS , Linux and other UNIX, not Windows).


• MapReduce - Distributed computing, map/reduce style example of calculating and reducing word counts from different documents. Note that newLISP does this without any modules to import. The built-in function net-eval takes care of mapping all network communications including distribution of code to external nodes.

Science, Theory and Math

• Closures, Contexts and Stateful Functions explains the difference between Scheme Closures and newLISP namespaces, called contexts and shows a method for writing stateful functions via in-place modification.


• The Why of Y in newLISP. Richard P. Gabriel's Y-function derivation modified for newLISP.
  
  
• Recursion - iteration - generator a comparison of recursive, iterator and generator algorithms using the Fibonacci algorithm as example.


• Mergesort benchmark against Perl, Python, Ruby and PHP.