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  1. Busch & Müller all weather dynamo roller

    After recently purchasing a Busch & Müller dymotec 6 dynamo, I found the noise level increased dramatically during wet weather. Going from a low hum in the dry to a higher pitch tone in wet weather.

    Initially I thought this could be down to the rubber roller slipping against the tyre ...

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  2. Dymotec 6 & Lumotec IQ Cyo RT senso plus

    After visiting Berlin recently I noticed how many bikes used dynamos and liked the idea of a fixed front light powered by a dynamo.

    The thought of not having to carry spare battries and the fact that my battery powered front light needed replacement anyway, I decided to try out ...

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  3. Rotate arbitrary

    Another way to rotate by arbitrary values.

    You can in python 2.x - just str.encode(“rot13”) - but for other rotations you could use the following (for ascii):

    from string import ascii_uppercase as uc, ascii_lowercase as lc, maketrans
    
    letters = uc + lc
    rotate = 17 # ROT17
    rot = "".join((x[:rotate][::-1] + x ...
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  4. Favourite quotes

    A selection of my favourite quotes I’ve come across recently…

      • L1 cache - 3s grabbing a piece of paper
      • L2 cache - 14s picking a book from a shelf
      • System RAM - 4m walk down the hall
      • Hard drive seek - Like leaving the building to roam the earth for one year and ...
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