Please note that as of October 24, 2014, the Nokia Developer Wiki will no longer be accepting user contributions, including new entries, edits and comments, as we begin transitioning to our new home, in the Windows Phone Development Wiki. We plan to move over the majority of the existing entries. Thanks for all your past and future contributions.
The Knowledge Base has been merged into the wiki as discussed in this blog.
You may still find the code snippets table useful. This maps common mobile application use cases to the code snippets for each of the main development frameworks.