Kx wiki (1993-2016)
The old wiki has now been taken off life support at /oldwiki. Requiescat in pacem.
If this causes you a problem, please contact the Librarian.
Version 1 – with URLs beginning
/q – has been removed.
Most URLs beginning
code.kx.com/q now return 404s.
code.kx.com/wiki do the same.
We apologise for the undoubted inconvenience.
We have taken this drastic step after a failed campaign to dissuade Google Search from returning wiki and V1 pages in its top results. It appeared that its own history of referrals to the old material outweighed sitemaps and X-Robots metatags.
We expect Google Search to catch up soon.
Version 2 of this site has
- extensive revision of the Reference, including
- a completely new description of the iterators (formerly adverbs), completing the terminology review that started in 2016
- simplified URLs for Reference articles
- a new version, Iterators of the 2013 white paper “Efficient use of adverbs”
- HTTP requests redirected to HTTPS
- An updated version of
The Kx wiki, frozen in 2016, has been retired to code.kx.com/oldwiki.
Announcements to mark our 25th birthday:
- Kdb+ on Google Cloud Platform
- Version 3.6
- Natural Language Processing toolkit
- Docker and Notebooks
- JupyterQ FAQ
New development tools
Jupyter kernel for kdb+
In beta on GitHub: a Jupyter kernel for kdb+
Socket sharding on Linux
New white paper Socket sharding with kdb+ on Linux
Custom search engine
We have replaced the native MkDocs client-side search engine with a custom search engine written in q.
The large majority of visits to this site are from laptops and desktops, so the new search engine displays results as a page, rather than a popup list.
The engine is still being developed. Please send your comments, suggestions and requests to email@example.com.
The Fusion interfaces are libraries for connecting kdb+ to other technologies. The libraries are
- written for non-kdb+ programmers to use
- well documented, with understandable and useful examples
- maintained and supported by Kx on a best-efforts basis, at no cost to customers
- released under the Apache 2 license
- free for all use cases, including 64-bit and commercial use
- syntax highlighting for q
- a Copy to Clipboard button on all code blocks
Creative Commons license
The site content is now licensed under a Creative Commons Attribution 4.0 International License.
And the words that are used for to get this ship confused
Will not be understood as they are spoken
— Bob Dylan “When the ship comes in”
We have revised the terms in which we talk about q, to align them with common usage. You will find operators and unary and binary functions applied prefix, infix and postfix. Q’s adverbs still need their distinctive name, but you will no longer find references to verbs, monads or dyads.
We also now distinguish consistently between glyphs and what they denote. In some cases we’ve coined new names to distinguish what was previously conflated. So, for example,
/ denotes Over, Converge, Do, and While.
Overloads such as these are distinguished in use by syntax and arguments. Every operator, function and adverb now has its syntax and arguments consistently and clearly described.