Merge branch 'master' into pdf

docs/basics/ipc.md

@@ -58,33 +58,36 @@ q)h  /h is the socket (an OS file descriptor)
 
 ## Message format
 
-Where `h` is the socket the message may be a string or parse tree.
+Where `h` is the socket, the message may be a string or list.
 
 ```q
-q)h "2+2"   /string
+q)h"2+2"   /string
 4
 
-q)h (+;2;2) /parse tree
+q)h(+;2;2) /list
 4
 ```
 
-Use the parse tree format to pass local functions and data to the receiver.
+Use the list format to pass local functions and data to the receiver.
 
 ```q
-q)h"f:{2+x}" /Set function f on receiver
-q)f:{4+x} /Set local function f
+q)h"fn:{2+x}" /Set function fn on receiver
+q)fn:{4+x} /Set local function fn
 
-q)h(`f;2) /Receiver definition of f called
+q)h(`fn;2) /Receiver definition of fn called
 4
 
-q)h(f;2) /Local f passed to receiver for evaluation
+q)h("fn";2) /Receiver definition of fn called
+4
+
+q)h(fn;2) /Local fn passed to receiver for evaluation
 6
 
 q)v:10
-q)h(`f;v) /Passing variable as argument
+q)h(`fn;v) /Passing variable as argument
 12
 
-q)h({x+y};2;3) /Extend the list to pass more variables
+q)h({x+y};2;3) /Extend the list to pass more arguments
 5
 ```
 

docs/github.md

@@ -1282,7 +1282,7 @@ GitHub topic queries:  
 
     :fontawesome-brands-github: [kxcontrib](https://github.com/kxcontrib) contains repositories salvaged from the former Subversion server for which we have been unable to identify current versions on GitHub. These repositories are not maintained. 
 
-## :fontawesome-solid-share-square: kxcontrib
+## :fontawesome-brands-github: kxcontrib
 
 !!! warning "Salvaged repositories"
 	:fontawesome-brands-github: [kxcontrib](https://github.com/kxcontrib) contains repositories salvaged from the former Subversion server for which we have been unable to identify current versions on GitHub. These repositories are not maintained.

docs/interfaces/index.md

@@ -15,22 +15,36 @@ Our Fusion interfaces are
 -   released under the [Apache 2 license](https://www.apache.org/licenses/LICENSE-2.0)
 -   free for all use cases, including 64-bit and commercial use
 
-### Languages
+## Languages
 
-<table class="kx-compact" markdown>
-<tr markdown><td markdown>[csharpkdb](https://github.com/KxSystems/csharpkdb)</td><td markdown>Call kdb+ from **C#** and **.NET** [:fontawesome-regular-map:](../wp/gui/index.md "White paper: An introduction to graphical interfaces for kdb+ using C#")</td></tr>
-<tr markdown><td markdown>[embedPy](https://github.com/KxSystems/embedPy)</td><td markdown>Call **Python** from q</td></tr>
-<tr markdown><td markdown>[embedR](https://github.com/KxSystems/embedR)</td><td markdown>[Call **R** from q](r.md)</td></tr>
-<tr markdown><td markdown>[ffi](https://github.com/KxSystems/ffi)</td><td markdown>[Call **C/C++** from q](using-c-functions.md)</td></tr>
-<tr markdown><td markdown>[javakdb](https://github.com/KxSystems/javakdb)</td><td markdown>**Java** client for kdb+</td></tr>
-<tr markdown><td markdown>[pykx](https://code.kx.com/pykx)</td><td markdown>Integrate **Python** and q code</td></tr>
-<tr markdown><td markdown>[rkdb](https://github.com/KxSystems/rkdb)</td><td markdown>[Query kdb+ from **R**](r.md)</td></tr>
-<tr markdown><td markdown>[kxkdb](https://github.com/KxSystems/kxkdb)</td><td markdown>Query kdb+ from **Rust**</td></tr>
-</tr>
-</table>
+### C/C++
+
+[c.o](c-client-for-q.md) Call C/C++ from q, call q from C/C++, IPC communication with kdb+ (dynamic libraries and standalone applications)<br>
+[ffi](https://github.com/KxSystems/ffi) An extension to kdb+ for loading and calling dynamic libraries using pure q [:fontawesome-regular-map:](using-c-functions.md)
+
+### C# #
+
+[csharpkdb](https://github.com/KxSystems/csharpkdb) Call kdb+ from C# and .NET [:fontawesome-regular-map:](../wp/gui/index.md "White paper: An introduction to graphical interfaces for kdb+ using C#")
+
+### Java
+
+[javakdb](https://github.com/KxSystems/javakdb) Java client for kdb+
+
+### Python
+
+[pykx](https://code.kx.com/pykx) Integrate Python and q code<br>
+[embedPy](https://github.com/KxSystems/embedPy) Call Python from q
+
+### R
+
+[rkdb](https://github.com/KxSystems/rkdb) Query kdb+ from R [:fontawesome-regular-map:](r.md)<br>
+[embedR](https://github.com/KxSystems/embedR) Call R from q [:fontawesome-regular-map:](r.md)
+
+### Rust
 
+[kxkdb](https://github.com/KxSystems/kxkdb) Query kdb+ from Rust
 
-### Message and data formats
+## Message and data formats
 
 <table class="kx-compact" markdown>
 <tr markdown><td markdown>[arrowkdb](https://github.com/KxSystems/arrowkdb)</td><td markdown>Read and write **Arrow** and **Parquet** data</td></tr>

docs/kb/inetd.md

@@ -14,7 +14,7 @@ When a client attempts to connect to one of the service, `inetd` will start a pr
 
 This way, `inetd` will run the server programs as they are needed by spawning multiple processes to service multiple network connections.
 
-A kdb+ server can work under `inetd` to provide a private server for each connection established on a designated port. (Since V2.4.)
+A kdb+ server can work under `inetd` to provide a private server for each connection established on a designated port.
 
 For Windows you might be able to have kdb+ run under `inetd` using Cygwin.
 

docs/learn/blogs.md

@@ -24,9 +24,7 @@ _A selection of technical articles of interest to kdb+ developers_
 -   [Parsing data in kdb+](https://kx.com/blog/kx-product-insights-parsing-data-in-kdb/), by Rian O’Cuinneagain
 -   [Server-as-a-Function: Providing RESTful JSON APIs in q](https://kx.com/blog/server-as-a-function-providing-restful-json-apis-in-q/), by Rob Moore
 -   [Deferred response](https://kx.com/blog/kdb-q-insights-deferred-response/), by Gopala Bhat
--   [qSQL vs standard SQL queries](https://kx.com/blog/kdb-qsql-versus-standard-sql-queries/), by Ryan Hamilton
 -   [Scripting with q](https://kx.com/blog/kdb-q-insights-scripting-with-q/), by David Crossey
--   [Thoughts on tables in kdb+](https://kx.com/blog/tech-talk-thoughts-tables-kdb/), by Paul Kerrigan
 
 
 ## Machine learning
@@ -35,7 +33,6 @@ _A selection of technical articles of interest to kdb+ developers_
 -   [Natural Language Processing](https://kx.com/blog/natural-language-processing-in-kx/)
 -   [A comparison of Python and q for handling lists](https://kx.com/blog/a-comparison-of-python-and-q-for-handling-lists/)
 -   [Feature extraction and selection in kdb+](https://kx.com/blog/machine-learning-toolkit-release-feature-extraction-and-selection-in-kdb/)
--   [Using q in Machine Learning with neural-network and clustering examples](https://kx.com/blog/using-q-machine-learning-neural-network-clustering-examples/)
 -   [Neural networks in kdb+](https://kx.com/blog/neural-networks-in-kdb-2/)
 -   [Using embedPy to apply LASSO regression](https://kx.com/blog/machine-learning-using-embedpy-to-apply-lasso-regression/)
 -   [Machine-Learning techniques featured in JupyterQ notebooks](https://kx.com/blog/machine-learning-techniques-featured-in-jupyterq-notebooks/)
@@ -46,39 +43,28 @@ _A selection of technical articles of interest to kdb+ developers_
 
 -   [Transitive comparisons](https://kx.com/blog/kdb-transitive-comparisons/)
 -   [Why the recent kdb+ wins matter](https://kx.com/blog/2018-benchmark-wrap-up-why-the-recent-kdb-wins-matter/)
--   [Benchmarking kdb+ on Raspberry Pi](https://kx.com/blog/benchmarking-kdb-raspberry-pi/)
 
 
 ## Applications and case studies
 
 -   [Data visualization with kdb+ using ODBC: A Tableau case study](https://kx.com/blog/data-visualization-with-kdb-using-odbc-a-tableau-case-study/)
--   [KX 1.1 billion taxi ride benchmark highlights advantages of kdb+ architecture](https://kx.com/blog/kx-1-1-billion-taxi-ride-benchmark-highlights-advantages-kdb-architecture/)
--   [kdb+ integral to BitMEX Bitcoin derivatives exchange growth strategy](https://kx.com/blog/use-case-kdb-integral-bitmex-bitcoin-derivatives-exchange-growth-strategy/)
 -   [Combining high-frequency cryptocurrency venue data using kdb+](https://kx.com/blog/combining-high-frequency-cryptocurrency-venue-data-using-kdb/)
 -   [Template of Fortnite gamer visualizations using Dashboards](https://kx.com/blog/kx-product-insights-template-of-fortnite-visualizations-in-destruction-using-dashboards/)
 -   [KX for Love!!](https://kx.com/blog/kx-for-love/)
 -   [Storing and exploring the Bitcoin blockchain](https://kx.com/blog/kdb-storing-and-exploring-the-bitcoin-blockchain/)
 -   [eFX: Data and analytics are the next arms race](https://kx.com/blog/current-trends-in-efx-data-and-analytics-are-the-next-arms-race/)
--   [KX for IoT: Industry 4.0 manufacturing](https://kx.com/blog/kx-iot-industry-4-0-manufacturing/)
 -   [IIoT for predictive maintenance and Big Data](https://kx.com/blog/kx-insights-iiot-predictive-maintenance-big-data/)
 -   [Quantile Technologies](https://kx.com/blog/powered-by-kx-quantile-technologies-limited/)
 -   [MIT Motorsports’ kdb+ Vehicle Telemetry System](https://kx.com/blog/kx-use-case-mit-motorsports-kdb-vehicle-telemetry-system/)
 -   [Consolidated audit trail go-live is now a certainty](https://kx.com/blog/kx-insights-consolidated-audit-trail-cat-go-live-now-appears-a-certainty/)
 -   [Signal processing with kdb+](https://kx.com/blog/signal-processing-with-kdb/)
--   [KX fueling IoT revolution with manufacturing win](https://kx.com/blog/kx-fueling-iot-revolution-manufacturing-win/)
--   [Overview of kdb+tick](https://kx.com/blog/overview-kdb-tick/)
 -   [Web scraping](https://kx.com/blog/web-scraping-a-kdb-use-case/)
 -   [The exploration of space weather at NASA FDL](https://kx.com/blog/nasa-frontier-development-lab-space-weather-challenge/)
 -   [Edge computing on a low-profile device](https://kx.com/blog/kx-poc-blog-series-edge-computing-on-a-low-profile-device/)
 
 
 ## Interfaces, tools, and platforms
 
--   [Kafka](https://kx.com/blog/kdb-interface-kafka/)
 -   [kdb+ on Anaconda and Google Cloud](https://kx.com/blog/kdb-on-anaconda-and-google-cloud/)
 -   [Migrating a kdb+ historical database to the Amazon Cloud](https://kx.com/blog/migrating-a-kdb-historical-database-to-the-amazon-cloud/)
--   [Interface to R](https://kx.com/blog/kdb-interface-r/)
--   [KX Analyst IDE](https://kx.com/blog/kx-product-insights-analyst-for-kx-ide/)
 -   [Momentum Ignition Alert](https://kx.com/blog/kx-product-insights-momentum-ignition-alert/)
-
-