Learntofish's Blog

A blog about math, physics and computer science

Try Linux with these simple steps

Posted by Ed on March 26, 2016

Have you ever wanted to try Linux? Here is how you can do it, and all you need is a USB memory stick. Read the rest of this entry »

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Introduction to Quantum Computing

Posted by Ed on February 19, 2016

Quantum Computing for the determined
This is a series of 22 videos by Michael Nielsen.
After these videos you can watch this talk given by him.

The topics range from the qubit, quantum gates, superdense coding to quantum teleportation. To understand the lectures I’d say you should have had some exposure to quantum mechanics. In particular you should know about complex numbers and matrix multiplication.

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Github tutorials

Posted by Ed on February 7, 2016

Here are some nice github tutorials: Read the rest of this entry »

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Start menu in Windows 10 does not work anymore

Posted by Ed on December 8, 2015

Today I’ve finally received the notification for downloading Windows 10 as an upgrade from Windows 7. I had reserved it earlier a few months ago and was already worried that something was broken because it took so long. The installation was ¬†smooth and went without any problems.

One thing I don’t like in Windows 10 is how the font looks like. The letters are suddenly so thin and it appears as if the antialiasing is too high compared to how they looked in Windows 7. I will have to look into this deeper later.

The next day I encountered something annoying. The start menu would not show up anymore, symbols in the task bar on the bottom right were not being displayed, and in the center of the task bar the icons for the browsers were missing. As a result, I couldn’t reopen a browser window after having minimized it.

Turns out that the culprit was Windows’s hibernating mode. When I shut down¬†my computer I also turn off the power completely with a switch on the power strip. However, the computer needs some power in hibernating mode, otherwise data will get lost and this is probably what lead to the problems mentioned above.

Disabling the hibernating mode shuts down the computer completely and also allows turning the power off completely. To do so press the Windows Key + X and open a command prompt with administrator rights. Enter the command

powercfg -h off

This has resolved all the problems.

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Awesome Pycon 2015 presentations

Posted by Ed on April 29, 2015

Watch the Pycon 2015 presentations here. I recommend the excellent talk Facts and Myths about Python names and values by Ned Batchelder. It clears misconceptions you may have regarding assignments, references and values in Python. I love this slide.

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How to write code the pythonic way

Posted by Ed on April 24, 2015

Check out this interesting article by Constantine Lignos called Anti-Patterns in Python Programming. It demonstrates with several examples how you should write code in Python.

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Some changes in Chrome

Posted by Ed on April 23, 2015

Today there were some changes for the Chrome browser that I did not like. Read the rest of this entry »

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Introduction to generators in Python 3.4

Posted by Ed on April 22, 2015

In this blog post I will explain how generators are used in Python 3.4. Read the rest of this entry »

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PC does not boot and black screen – FIX

Posted by Ed on April 20, 2015

In this blog post I will describe how I solved a problem with my PC that did not want to boot and the screen remained black. Read the rest of this entry »

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