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If vs. Switch Speed
...s are typically faster than equivalent if-else-if statements (as e.g. descibed in this article ) due to compiler optimizations.
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What is the difference between \r and \n?
... different? I think it has something to do with Unix vs. Windows vs. Mac, but I'm not sure exactly how they're different, and which to search for/match in regexes.
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Django Cookies, how can I set them?
I have a web site which shows different content based on a location
the visitor chooses. e.g: User enters in 55812 as the zip. I know what
city and area lat/long. that is and give them their content pertinent
to that area. My question is how can I store this in a cookie so that
when they return they...
Change key pair for ec2 instance
...WS management console? I can stop the instance, I can create new key pair, but I don't see any link to modify the instance's key pair.
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Change old commit message on Git
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It says:
When you save and exit the editor, it will rewind you back to that last commit in that list and drop you on the command line with the following message:
$ git rebase -i HEAD~3
Stopped at 7482e0d... updated the gemspec to hopefully work better
You can amend the commit now, with
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Is there a way to “autosign” commits in Git with a GPG key?
...-S all the time to make sure your commits are signed, there is a proposal (branch 'pu' for now, December 2013, so no guarantee it will make it to a git release) to add a config which will take care of that option for you.
Update May 2014: it is in Git 2.0 (after being resend in this patch series)
S...
How many bytes does one Unicode character take?
I am a bit confused about encodings. As far as I know old ASCII characters took one byte per character. How many bytes does a Unicode character require?
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background function in Python
...ript that sometimes displays images to the user. The images can, at times, be quite large, and they are reused often. Displaying them is not critical, but displaying the message associated with them is. I've got a function that downloads the image needed and saves it locally. Right now it's run inli...
When do you use map vs flatMap in RxJava?
... (this is taken from IntroToRx)
As you want to transform your json to an object, using map should be enough.
Dealing with the FileNotFoundException is another problem (using map or flatmap wouldn't solve this issue).
To solve your Exception problem, just throw it with a Non checked exception : RX...
How do I pull my project from github?
I have a project on github that I have been working on before. However, I wiped out my computer and I am wondering which git command should I invoke under my username to checkout my project again so that I can push my latest changes to github under my account.
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