Improved Logo interpreter in Red

April 30th, 2016

Using what I have learned in the last few days about ‘parse’ in Red, I have improved the Logo interpreter from the last post, so that it now supports procedures.

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Little Logo interpreter in 81 lines of Red

April 26th, 2016

I have made a little “port” of a logo interpreter I wrote in Rebol some time ago. Back then I did it to try and understand how parsing works in Rebol. Now I just wanted to have some fun with Red, since it has a GUI as of the 0.6 release.

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Mapping Lisp to ABAP: It’s hard work

July 7th, 2015

So I have been busy with the ABAP Lisp interpreter. The main focus now is the integration to ABAP. When I first started out with it, I had a vague idea in my head of what I wanted the interpreter to be able to do.

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Progress on the ABAP Lisp interpreter

June 30th, 2015

Since announcing the ABAP Lisp interpreter on SCN last week, I have made a few commits to the ABAP LispĀ repo. I was rather chuffed to get some positive response on the article, and it does provide a bit more motivation to keep working on it.

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A Lisp Interpreter in ABAP

June 24th, 2015

I published a blog post today titled “A Lisp Interpreter in ABAP” on SCN. I just finished developing a basic Lisp interpreter in ABAP which is inspired by Peter Norvig’s “(How to Write a (Lisp) Interpreter (in Python))” and Anthony Hay’s “Lisp interpreter in 90 lines of C++“.

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nwrfc 0.0.8 gem is out

June 5th, 2015

I have just published a new version of the nwrfc gem with (as usual) very minor updates.
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Arbitrary value store (registry) for ABAP

May 20th, 2015

One of the problems ABAP developers face from time to time is the need to store arbitrary values for processing. These values do not always justify creating a new table, and there is no convenient place to store such values.

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Yet another ABAP JSON parser – and some other stuff

March 27th, 2015

We have had the capability to process JSON in ABAP for some time now (refer to this blog post for an introduction). The problem is that it does not satisfy all the use cases without some effort and, therefore, there is still some scope for writing a custom JSON parser in ABAP. I recently wrote one again.

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SAP Business Intelligence with Elasticseach and Kibana

February 20th, 2015

After having played around with Elasticsearch for indexing PI payloads and indexing ABAP source code, and especially after seeing the new (and now just-released) Kibana 4, it occurred to me that Elasticsearch would actually be great for business intelligence reporting.

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Having fun with Rebol ‘parse’ – a little Logo interpreter

February 18th, 2015

While learning about the power of dialects in Rebol, I decided to write a little Logo interpreter to put what I learned to use.

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