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Christoph Breitkopf
Works at Magrathea Informatik GmbH
Attended Technical University of Berlin
Lives in Hannover
1,264 followers|536,579 views
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Education
  • Technical University of Berlin
    Computer Science, 1986 - 1996
Basic Information
Gender
Male
Story
Tagline
The cure for boredom is curiosity. There is no cure for curiosity.
Introduction
I'm an application programmer living in Hannover, Germany. Use mostly Java at work, but real interest is in functional programming (Prefer Haskell in principle and mostly use less-pure stuff in practice).

I'm interested in photography, though more on the equipment side - I wouldn't know good composition if it hit me in the head. Some time I'll even update my long neglected bokeh website: http://www.bokeh.de/en

I also enjoy good books (or less good, as long as it's fantasy or SF), tea, and simple but good food.
Bragging rights
Survived a stint in management.
Work
Occupation
Programmer
Employment
  • Magrathea Informatik GmbH
    Chief Programmer, present
Places
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Currently
Hannover
Previously
Berlin

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Christoph Breitkopf

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Pedestal

Quite often, I snap a shot of a scene which I think will make an interesting photo and am disappointed when reviewing it later. Rarely, the opposite happens: a shot I expected I'd delete later turns out to be a much better than I thought. This was just a test shot to see how an old lens behaved wide open, but for some reason I like it very much.
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Bumblebee in Lavender
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Teddy Bear on Steam Engine

Steam Ship "Meissen", Dresden.

#teddybear #streamengine #dresden #ship #elbe
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Averaging unsigned numbers in Haskell
In performance sensitive code I needed the average of two unsigned shorts: uavg :: Word16 -> Word16 -> Word16
uavg a b = ... The naive implementation (a + b) `shiftR` 1 does not work if the addition overflows. In a language with a less disciplined type sy...
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Großer Garten

Herrenhäuser Gärten, Hannover
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Weigh your haskell code
Chris Done released the wonderful weigh library to check memory use much like criterion enables you to check speed. His blog post contains a convincing example on how looking at the allocations can point you to major speedups, making me eager to check Inter...
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Christoph Breitkopf

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I'm really stunned by this news. I like this focal length better than 85mm, and would have expected a renewed 2/105 (without the DC feature), but not this. Hope it performs.

Just hope AF accuracy is enough for this lens especially with off-center focus points. I prefer manual focus, which is why I really hope that Nikon will introduce a full frame camera with an EVF soon. Some people seem to be able to accurately focus using an optical viewfinder, but I certainly can't.
On August 26th Nikon will announce a new AF-S Nikkor 105mm f/1.4E ED full frame N lens (with gold ring, without VR). The price is Japan including tax is
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Niedersächsische Staatskanzlei

Das Gerüst an der Niedersächsischen Staatskanzlei in Hannover ist in den Welfenfarben abgedeckt. Zufall oder Absicht?
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Doubt whether it was a good idea to commute by bicycle today...

(I will admit that this has been edited a bit and does not look quite as dramatic in color. I did get rather wet on my way home, though.)
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IntervalMap Retrospective
IntervalMap ,
my package for containers with intervals as keys, has gone through
several changes since its inception in late 2011.
As is often the case, I had a concrete problem to solve and the initial code
did that and only that. Going public on Hackage m...
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Großer Garten

Herrenhäuser Gärten, Hannover
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