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A cron job for rails: best practices?

... NB: these days I'm using whenever (see Jim Garvin's answer), but a raw cron entry to run rake task would be something like: 30 4 * * * /bin/bash -l -c 'cd /opt/railsapp && RAILS_ENV=production rake cron --silent' – tardate Jul 12 '11 at 10:08 ...
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In android studio,cannot load 2 facets-unknown facet type:android and android-gradle

When I open android studio I am getting an error- "Error loading project: Cannot load 2 facets. When I clicked to see the error the following appeared ...
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git still shows files as modified after adding to .gitignore

...n you commit the .idea/ directory will be removed from your git repository and the following commits will ignore the .idea/ directory. PS: You could use .idea/ instead of .idea/* to ignore a directory. You can find more info about the patterns on the .gitignore man page. Helpful quote from the g...
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gem install: Failed to build gem native extension (can't find header files)

I am using Fedora 14 and I have MySQL and MySQL server 5.1.42 installed and running. Now I tried to do this as root user: 1...
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Easy way to test a URL for 404 in PHP?

... I found this answer here: if(($twitter_XML_raw=file_get_contents($timeline))==false){ // Retrieve HTTP status code list($version,$status_code,$msg) = explode(' ',$http_response_header[0], 3); // Check the HTTP Status code switch($status_code) { ...
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Visual Studio 64 bit?

..., and the processor cache stays the same size. That basically results in a raw speed hit (your mileage may vary). So you start in a hole and you have to dig yourself out of that hole by using the extra memory above 4G to your advantage. In Visual Studio this can happen in some large solutions but ...
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hexadecimal string to byte array in python

...nvert this Hex String into a byte array so that I can shift each value out and convert it into its proper data type. 8 Ans...
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Best approach for GPGPU/CUDA/OpenCL in Java?

...luding MacOS X, FreeBSD, Linux, Windows, Solaris, all in Intel 32, 64 bits and ppc variants, thanks to its use of JNA). It has demos that actually run fine from Java Web Start at least on Mac and Windows (to avoid random crashes on Linux, please see this wiki page, such as this Particles Demo. It ...
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PHP json_decode() returns NULL with valid JSON?

... I've been using the special characters since I started the application and there were no problems before. Locally, the JSON decoding works perfectly. On my server, it doesn't. And I can't call json_last_error() because it's PHP 5.2.9. That function appears on PHP 5.3.0. – J...
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What is a git topic branch?

... Topic branches are typically lightweight branches that you create locally and that have a name that is meaningful for you. They are where you might do work for a bug fix or feature (they're also called feature branches) that is expected to take some time to complete. Another type of branch is the ...