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Can you have if-then-else logic in SQL? [duplicate]
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edited Feb 26 '13 at 10:15
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My Understanding of HTTP Polling, Long Polling, HTTP Streaming and WebSockets
...TP poll
Plugin networking
HTTP long poll, streaming
Also note that there is a W3C proposal for standardizing HTTP streaming called Server-Sent Events. It is currently fairly early in it's evolution and is designed to provide a standard Javascript API with comparable simplicity to WebSockets.
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Resize svg when window is resized in d3.js
I'm drawing a scatterplot with d3.js. With the help of this question :
Get the size of the screen, current web page and browser window
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How do you add swap to an EC2 instance?
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A fix for this problem is to add swap (i.e. paging) space to the instance.
Paging works by creating an area on your hard drive and using it for extra memory, this memory is much slower than normal memory however much more of it is avail...
Is there a link to GitHub for downloading a file in the latest release of a repository?
Using GitHub's Release feature , it is possible to provide a link to download a specific version of the published software. However, every time a release is made, the gh-page also needs to be updated.
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Prevent double submission of forms in jQuery
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Update in 2018: I just got some points for this old answer, and just wanted to add that the best solution would be to make the operation idempotent so that duplicate submissions are harmless.
Eg, if the form creates an order, put a unique ID in the form. The first time ...
How to retrieve the hash for the current commit in Git?
...it rev-parse --verify HEAD
You can also retrieve the short version like this
git rev-parse --short HEAD
Sidenote: If you want to turn references (branches and tags) into SHA-1, there is git show-ref and git for-each-ref.
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What is the difference between printf() and puts() in C?
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puts is simpler than printf but be aware that the former automatically appends a newline. If that's not what you want, you can fputs your string to stdout or use printf.
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Warning :-Presenting view controllers on detached view controllers is discouraged
...completion:nil];
And then in your modal view controller, when everything is finished, you can just call :
[self dismissViewControllerAnimated:YES completion:nil];
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Xcode doesn't show the line that causes a crash
...al (segmentation fault for example) but the crash I am trying to deal with is a simple SIGABRT with detailed information logged in the console:
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