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IPC performance: Named Pipe vs Socket
Everyone seems to say named pipes are faster than sockets IPC. How much faster are they? I would prefer to use sockets because they can do two-way communication and are very flexible but will choose speed over flexibility if it is by considerable amount.
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How to tag an older commit in Git?
...made commits since then.
A tag at the beginning would allow us to "roll back" production to a known, stable state.
8 Answer...
How to exit from the application and show the home screen?
...ategory(Intent.CATEGORY_HOME);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
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Spark java.lang.OutOfMemoryError: Java heap space
...few suggestions:
If your nodes are configured to have 6g maximum for Spark (and are leaving a little for other processes), then use 6g rather than 4g, spark.executor.memory=6g. Make sure you're using as much memory as possible by checking the UI (it will say how much mem you're using)
Try using mo...
How to undo a git merge with conflicts
I am on branch mybranch1 . mybranch2 is forked from mybranch1 and changes were made in mybranch2 .
6 Answers
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How to use SQL Order By statement to sort results case insensitive?
..., SQLite doesn't seem to consider A=a during sorting, thus I get results like this:
3 Answers
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Set cookie and get cookie with JavaScript [duplicate]
I'm trying to set a cookie depending on which CSS file I choose in my HTML. I have a form with a list of options, and different CSS files as values. When I choose a file, it should be saved to a cookie for about a week. The next time you open your HTML file, it should be the previous file you've cho...
Map and Reduce in .NET
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Linq equivalents of Map and Reduce:
If you’re lucky enough to have linq then you don’t need to write your own map and reduce functions. C# 3.5 and Linq already has it albeit under different names.
Map is Select:
Enumerable.Range(1, 10).Select(x => x + 2);
Reduce is...
How do I save a UIImage to a file?
If I have a UIImage from an imagePicker, how can I save it to a subfolder in the documents directory?
9 Answers
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How to use multiple AWS Accounts from the command line?
...ld be able to use the following command-options in lieu of the EC2_PRIVATE_KEY (and even EC2_CERT) environment variables:
-K <private key>
-C <certificate>
You can put these inside aliases, e.g.
alias ec2-describe-instances1 ec2-describe-instances -K /path/to/key.pem
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