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Showing posts from May, 2018

The Role of Abstractions in Software Engineering

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This is the text of a lightning talk, a five minute presentation, given at PyCon 2018.

This is an abstract talk. There isn’t time to give examples but I hope that the application to the day to day challenges of the practise of software engineering is clear. The only theory worth a damn is the theory of the practise. This is a talk about the role of abstractions in software engineering.

Programming is all about the use of abstractions. We often say that the fundamental language spoken by the machine is ones and zeros. Binary. This isn’t true. Ones and zeroes are an abstract representation of the fundamental operation of computers. It’s a way of representing what central processors do in a way that can be understood by people.

The actual language spoken by computers is the electromagnetic dance across wires and etched silicon, choreographed by the beating of a quartz crystal at the heart of the machine.
Ones and zeroes are a representation of that dance, understandable by humans in ord…

Prunes and Funerals

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I was enjoying a sweet treat of prunes and dried apricots with Delia last night and she remarked that prunes reminded her of funerals. She still likes them though.
Delia grew up in a medium sized town in Romania called Roman, in the North East of Romania in the poorest region of the country called Moldova and bordering the country of Moldova where they also speak Romanian. 
Until Delia's mother fell into a bleak depression lasting several years both of Delia's parents worked. So Delia was a latch-key  kid even from her primary school years. Delia's father worked in the local chocolate factory under the communists. Money was tight for everyone so much of the economy ran on a barter scheme. A visit to the doctor or hospital was free, except if you actually wanted anything doing (like your sheets changing or you wanted feeding during a hospital stay) bribes were required. This minor corruption became so endemic that it's still prevalent. We gave our first ever bribe on a tr…