Computation Abstraction: Going beyond programming language control syntax, or what we’ve missed from FP for so long in mainstream
For a long time, and due to the lack of main FP concepts in most mainstream languages, we missed opportunities to abstraction and code expressiveness and conciseness. With today’s democratization of FP, Computational Abstraction is what will enable us to be less dependent on specific programming language syntax offering; creating libraries of control structures and composition forms that help find concise and expresive solutions to enterprise programming challenges (null, lists treatment, error handling), capturing elegantly important business concepts in code, and programming at the right level of abstraction.For a long time, and due to the lack of main FP concepts in most mainstream languages, we missed opportunities to abstraction and code expressiveness and conciseness. With today’s democratization of FP, Computational Abstraction is what will enable us to be less dependent on specific programming language syntax offering; creating libraries of control structures and composition forms that help find concise and expresive solutions to enterprise programming challenges (null, lists treatment, error handling), capturing elegantly important business concepts in code, and programming at the right level of abstraction.
Slides: http://sadekdrobi.com/wp-content/uploads/2009/12/Computation-Abstraction666iiioii6jjjjjjhjj-5.pdf
Google wave: https://wave.google.com/wave/#restored:wave:googlewave.com!w%252BPgcakhgiA
Most of my Erlang programming is side effect free. I think I probably write very unusual Erlang programs that look a lot like Haskell ones. Now and then, I do write side effecting code. For example, when I use the random number generation libraries that comes with Erlang, it has a side effecting interface. It’s very tempting when you are building something on top of the library with a stateful interface to build code on top of that that also has a stateful interface.
That’s what I did the first time I tried to use it. That has caused me so much trouble. I think every single bug that I spent hours trying to track down has been caused by a side effect. In a way, I’ve been programming Haskell for so many years, that I’d forgotten just how devastating side effects are and just how difficult they make debugging. I’ve learnt that lesson again and nowadays, if I want to use a stateful library, I usually build a side effect free interface on top of it, so that I can then use it safely in the rest of my code.
from my interview with John Hughes at Erlang Factory
From my QCon09 London presentation slides.
@QCon SF, I attended a presentation of Erik Meijer in which he talked about research projects he is involved in, including the Volta project. He talked about an interesting problem that is ignored when we talk about Ajax application and especially when we talk about solutions like GWT that make you feel home while programming for the web. In such an experience, and before splitting your application and deploying it on the web, you feel quite secured. Anyway, often, it is not so important to look for securing inner computer guts communication when there is no network involved. Evil shows up when it is time to go live, to the clouds. There you are not communicating through inner channels but rather through public Internet network.
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This is an interview I did at QCon with Ted Neward. Talking to Ted was very interesting even though arguing with him turned to be not easy at all :)
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