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validation custom message for rails 3
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When to use os.name, sys.platform, or platform.system?
...the source code.
The output of sys.platform and os.name are determined at compile time. platform.system() determines the system type at run time.
sys.platform is specified as a compiler define during the build configuration.
os.name checks whether certain os specific modules are available (e.g. p...
Can JSON start with “[”?
...stand it when I first found it. But after seeing some examples of JSON and comparing them, I really like how they did it. Regarding json4j, perhaps you can submit a bug report to the json4j library's creator.
– Richard Marskell - Drackir
Feb 17 '11 at 22:04
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How do you receive a url parameter with a spring controller mapping
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How to clear Facebook Sharer cache?
...ion to my problem. You could go to this site:
https://developers.facebook.com/tools/debug
...then put in the URL of the page you want to share, and click "debug". It will automatically extract all the info on your meta tags and also clear the cache.
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Open Graph namespace declaration: HTML with XMLNS or head prefix?
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They are all equivalent and will all work.
Use prefix as it is the new recommended way and is fewer characters.
I'll get all our documentation updated to prefix.
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What is the purpose and uniqueness SHTML?
... name for Javascript+HTML+CSS or something).
You can use SSI to include a common header and footer in your pages, so you don't have to repeat code as much. Changing one included file updates all of your pages at once. You just put it in your HTML page as per normal.
It's embedded in a standard XM...
Jump to matching XML tags in Vim
Vim % operator jumps to matching parentheses, comment ends and a few other things. It doesn't, however, match XML tags (or any other tag, to the best of my knowledge).
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Foreign keys in mongo?
... You can also get an introduction for free with this screencast codeschool.com/courses/rails-for-zombies
– Nerian
Jun 13 '11 at 18:11
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