Tuesday, December 6, 2016

15 years of concurrency

An excellent overview of concurrency and Midori. Not the radioactive alien pee.

Friday, December 2, 2016

An overview of settlement

There was much comment about how expensive or difficult this would have been in the regular banking system – and this could well be true. But it also highlighted another point: in my expecience, almost nobody actually understands how payment systems work. That is: if you “wire” funds to a supplier or “make a payment” to a friend, how does the money get from your account to theirs?

Wednesday, July 27, 2016

Friday, June 3, 2016

A new version of OS/2!

This is clearly madness.
When the Blue Lion project was announced at the American WarpStock in October 2015, the name was only temporary. Following the close of events at WarpStock Europe, Arca Noae managing member Lewis Rosenthal noted in an interview that the final product name for the new OS/2 distribution is ArcaOS 5.0. The significance of the version number relates to IBM OS/2 4.52—the last maintenance release of the platform released by IBM in 2001.
It seems eComStation is having some problems.

Thursday, April 21, 2016

Ten Habits of a Good Programmer

Reproduced here in its entirety, but written by PH himself.
Good programmers are born and then made. You need talent and passion, and you need experience. I was lucky to learn from the best, and have lots of opportunity to practice. I'm going to summarize ten of the top habits I've always applied to my work. Cause or correlation? You tell me.
1. If it works and is still useful, don't throw it out.
This means writing portable code, and making reusable pieces. Libraries, APIs, whatever it takes. Be your own client. Layer your work
2. Never solve the same problem twice in parallel.
This means making tools. Adopt the Unix philosophy: command-line tools that do one thing and do it well. Learn about pipes. While you're at it, use Linux (or a BSD) as your development box.
3. Solve the same problem often in serial.
This means being willing to throw out your code and rewrite it when you find better solutions. If you work towards minimal APIs rather than features, this works better.
4. Write code, and repeat, until you are fluent in your language.
Using a small language makes this easier. It takes years to become really fluent in a programming language.
5. Learn to use code generators.
I've spoken of GSL before. A general-purpose code generator is an essential tool for a serious programmer. There are a few options. Try them, choose one.
6. Work with others.
Learn the techniques of collaboration. A good way is to contribute to an open source project. Or even better, start your own. Read Chapter 6 of the ZeroMQ Guide. It will enlighten.
7. Technology is a tool, not a tribal affiliation.
Never turn pragmatic choice of tools into a belief system. I have written editors and code generators in COBOL 74. The language matters little.
8. Aim for this cycle: learn, play, work, teach.
It is the fastest way to get better and deliver code that others can use and trust. Avoid this cycle: imagine, argue, agree, work. It is the fastest way to deliver junk.
9. Get your edit-compile-run-fail cycles down to seconds.
If your language offers a REPL that's cool. If not, make a shell script that runs the loop for you. Your goal is that after every edit, your code self-tests and passes or fails. Use asserts or equivalent to challenge your own code.
10. If you need debuggers, you're doing it wrong.
Make one change, test one change. Layer your code and write self-tests so that when it works, it always works. Use print statements. Aim towards APIs that are fully testable. Avoid language patterns that deliver fuzzy, unclear internal APIs.

Wednesday, March 23, 2016

IEX FTW

On Friday the SEC delayed ruling on IEX’s Exchange Application for three months – to June 18th 2016. Having read over 400 comment letters, they issued this notice, and request for more public comment. They state they did not have enough time to ponder IEX’s early March amendments to its application.
SEC seems to be getting pressure from existing players. Time to write some letters?

Thursday, January 21, 2016

Wednesday, January 6, 2016

NFS over DFS

No idea why I'm reading this article but I love it. I feel like each release of Windows does less of what I want.