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What's here: API documentation for software like mediawiki, drupal and web services. Both API documentation and API tools. OS and Internet API references.

[[wp:ApplicationProgrammingInterface|Application Programming Interface]] ([[wp:API|API]]) is the information about the exposed or 'public' variables, methods and objects or classes that a system makes available to the developer who wishes to enhance the system or interface with the system programmaticlyprogrammatically. Documenting If you make an API, documenting the API is a critical software development function. Publishing those documents makes the 'API Docs' available for easy reference. Sometimes called Developer Docs, they are often used not just as a reference materialIn documentation terms, but also as a faster way to get familiar with a codebase than by reading the full source code itself. == Best Practices ==Having good API/Developer documentation is must almost be treated like a "Best Practice" that has several important positive effects. For adoption (meaning success) separate piece of your software, good API docs are essential. Actual experience in using the phpDocumentor tool, PyDoc, within or other documentation tools is a quality that separates developers from non-developers or senior developers from jr. developers. Writing (good) (formatted) comments into your source code so that API docs can be automatically generated on a nightly basis is not optional if you are really interested in your software being successful.  == Tools / Generators ==phpDocumentor is the best documentation tool for PHP sources with inspiration from JavaDoc. The PyDoc tool is used "attached" to generate documentation on the language itself, and is also leveraged as a framework for developers of help systems and obviously used to document any classes, and methods of source code. See http://phpdoc.org/ and http://en.wikipedia.org/wiki/Javadoc == Documenting PHP Code ==The main resource is the [http://www.phpdoc.org Project website], including tutorials and full Documentation. The system can be installed via the PEAR installer, but should not be setup in an Internet-facing environment. See the [[PhpDocumentor]] article for details on our installation and usage. == Documenting other languages ==Aside from the Python-specific PyDoc, there are [http://wwwprogram.xs4all.nl/~rfsber/Robo/robodoc.html ROBODoc] (Windows and Fink) and [http://www.stack.nl/~dimitri/doxygen Doxygen] tools which should prove to meet all needs. For doxygen, you can<source lang="bash">sudo apt-get install doxygen-gui doxygen doxygen-doc</source>

SWIG [[wp:Swig]] ([http://www.swig.org/exec.html Executive Summary]) helps application developers reveal create an API. Several open source projects leverage SWIG, such as Subversion, wxPython and wxWindows. In turn, other developers can enhance these generic APIs to customize them for a particular programming language. For example Python developers can use [http://pysvn.tigris.org/docs/pysvn_prog_guide.html pySVN] while work is underway to expand the PHP interface. See more in the Subversion manual http://svnbook.red-bean.com/nightly/en/svn-book.html#svn.developer.usingapi