hhyndman

4 ms·

1.
by hhyndman 1y ago
What a great idea. I am a musician and use an iPad for my scores. It would be wonderful to replace my glasses with a pair that can display the music. I noticed the iron ring on your pinkie -- Canadian engineer?
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by hhyndman 3y ago
My Roland piano, with weighted keys, has MIDI.
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by hhyndman 3y ago
Back in the early 70s, I wrote software for the PDP11/20 (in ASM) to collect data from counters for accelerated particles. I recall handcrafting interrupt service routines to ensure they stayed ahead of the counters. And using paper ta
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by hhyndman 4y ago
An interesting article relating to "operator precedence is broken". https://www.foonathan.net/2017/07/operator-precedence/
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by hhyndman 4y ago
APL was the first language I learned in school and I was thrown by the precedence of the mathematical operators, but once the other operators were put in play, it was an incredibly simple rule -- and rarely did I or other APL developers hav
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by hhyndman 5y ago
Roger was a colleague of mine when I worked at IP Sharp. Lovely guy. My condolences to his family. Rest in peace.
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by hhyndman 5y ago
An excellent article. Thank you for your insights. I used to run a software engineering practice and I must admit that almost all of your points resonated with me. I'd like to add that one should catch oneself when falling into the &qu
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by hhyndman 5y ago
Back in university (1974), I took a course in AI. The prof wanted us to write a brute-force solution to solve the 8-queens problem -- any language! I wrote the solution in APL in about an hour and it only had 3 lines of code. The rest of th
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by hhyndman 6y ago
The APL language has this system variable ⎕IO (called QUAD IO -- index origin), which could be set to 0 (for 0-based indexing) or 1 globally in the environment. Also, ⎕IO can be set as a local variable of a function to limit the scope of th
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by hhyndman 7y ago
While studying Comp Sci at University of Toronto in the early 70s, I recall the 360/20 was used as a node to connect suburban colleges (Erindale and Scarborough) to the "mainframe", which was a 360/65 (I believe). We wou
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by hhyndman 7y ago
I downloaded a very high-resolution version of this map and created a 1m x 1m "poster" in my office. Accompanied with an illuminated magnifying glass, I often take a nice break from the computer monitor to examine the odd details
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Kdb+ time-series database available on-demand; free 64-bit personal edition(kx.com)
67 points by hhyndman 8y ago|1 comments
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1.1B Taxi Rides on Kdb+/q and 4 Xeon Phi CPUs(tech.marksblogg.com)
316 points by hhyndman 10y ago|102 comments