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How to generate a random string of a fixed length in Go?
...andom string. For that, Paul's solution is perfect. This is if performance does matter. Although the first 2 steps (Bytes and Remainder) might be an acceptable compromise: they do improve performance by like 50% (see exact numbers in the II. Benchmark section), and they don't increase complexity sig...
Vim for Windows - What do I type to save and exit from a file?
...ure out how to save and leave. I tried to press Ctrl + W + Q , but it doesn't do anything, but add ^ where the cursor is.
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Bomb dropping algorithm
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@psr: This does not work. The bombing method that is optimal for the outer layer may not be globally optimal. Example: 0011100 0100010 0000000 0000000 1110111. The optimal way to bomb the first layer is to bomb in the middle of the seco...
Rename a class in Xcode: Refactor… is grayed out (disabled). Why?
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Even this does not enable refactoring in xcode 4. I am becoming hopeless, why apple do not improve their Refactoring things. There is Eclipse to follow, how to do things!
– karim
Jun 17 '11 at 14:...
How do I create a folder in a GitHub repository?
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Git doesn't store empty folders. Just make sure there's a file in the folder like doc/foo.txt and run git add doc or git add doc/foo.txt, and the folder will be added to your local repository once you've committed (and appear on ...
How to retry after exception?
... the for-else construct in Python executes the else clause if the for loop doesn't break. So, in this case, that section executes if we try all 10 attempts and always get an exception.
– xorsyst
Jan 28 '15 at 11:25
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How can I get the line number which threw exception?
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It is insane that this answer does not have more upvotes. This is simple, works reliably, and does not come with the PDB caveats.
– Nick Painter
Jun 1 '17 at 15:49
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javac : command not found
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You installed the Java Runtime Environment (JRE) only, which does not contain javac. For javac, you have to install the OpenJDK Development Environment. You can install java-devel or java-1.6.0-openjdk-devel, which both include javac.
By the way: you can find out which package provide...
Difference between Django's annotate and aggregate methods?
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Am I correct that .annotate() on a qs alone does not hit the db, but calling q[0].num_authors does? I assume aggregate must always hit the db as it is a terminal clause?
– alias51
Jul 30 at 23:05
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Android accelerometer accuracy (Inertial navigation)
...etter than the 20cm/s error mentioned in the video this answer links. How does it do it? Does it have some way of improving the quality of inertial tracking? Or does it use clever image processing to do it using only the camera?
– Tom
Jun 14 '13 at 10:56
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