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copied!<p>Some examples of lisp macros:</p> <ul> <li><a href="http://common-lisp.net/project/iterate" rel="noreferrer">ITERATE</a> which is a funny and extensible loop facility</li> <li><a href="http://www.pps.jussieu.fr/~jch/software/cl-yacc/" rel="noreferrer">CL-YACC</a>/<a href="http://common-lisp.net/project/fucc" rel="noreferrer">FUCC</a> that are parser generators that generate parsers at compile time</li> <li><a href="http://www.weitz.de/cl-who/" rel="noreferrer">CL-WHO</a> which allows specifying html documents with static and dynamic parts</li> <li><a href="http://common-lisp.net/project/parenscript/" rel="noreferrer">Parenscript</a> which is a javascript code generator</li> <li>Various simple code-wrappers, e.g., error handlers (I have a with-gtk-error-message-handler that executes code and shows GtkMessageDialog if unhandled error occurs), executors (e.g., given a code, execute it in different thread; I have a within-main-thread macro that executes code in different threads; <a href="http://marijn.haverbeke.nl/pcall/" rel="noreferrer">PCall</a> library uses macros to wrap code to be executed concurrently)</li> <li>GUI builders with macros (e.g., specify widgets hierarchy and widgets' properties and have a macro generate code for creation of all widgets)</li> <li>Code generators that use external resources during compilation time. E.g., a macro that processes C headers and generates FFI code or a macro that generates classes definitions based on database schema</li> <li>Declarative FFI. E.g., specifying the foreign structures, functions, their argument types and having macros to generate corresponding lisp structures, functions with type mapping and marshaling code</li> <li>Continuations-based web frameworks for Common Lisp use macros that transform the code into CPS (continuation passing style) form.</li> </ul>

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