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What is the most efficient way to store tags in a database?

I am implementing a tagging system on my website similar to one stackoverflow uses, my question is - what is the most effective way to store tags so that they may be searched and filtered? ...
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Hex representation of a color with alpha channel?

...y standard on how to represent a color (including alpha channel) in hex format? 5 Answers ...
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How to download/checkout a project from Google Code in Windows?

How do I download a ZIP file of an entire project from Google Code when there are no prepared downloads available? 6 Answe...
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How can I check if a key is pressed during the click event with jQuery?

... click event with jQuery and be able to tell if a key was pressed at the same time so I can fork within the callback function based on the keypress event. ...
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Rails: Check output of path helper from console

Rails defines a bunch of magic with named routes that make helpers for your routes. Sometimes, especially with nested routes, it can get a little confusing to keep track of what URL you'll get for a given route helper method call. Is it possible to, using the Ruby console, see what link a given help...
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How to output messages to the Eclipse console when developing for Android

How can I print messages (like a flag) to the Eclipse console (or log) when developing and debugging an Android app 5 Answe...
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bash assign default value

I thought I could use this feature to write ${LONG_VARIABLE_NAME:=hello} instead of the longer LONG_VARIABLE_NAME=${LONG_VARIABLE_NAME:-hello} , but now bash also tries to execute 'hello' and that gives a command not found. Any way to avoid that? Or will I have to stick to the latter? Can someone...
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How do I negate a test with regular expressions in a bash script?

...linux-gnu), I would like to negate a test with Regular Expressions. For example, I would like to conditionally add a path to the PATH variable, if the path is not already there, as in: ...
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An “and” operator for an “if” statement in Bash

I'm trying to create a simple Bash script to check if the website is down and for some reason the "and" operator doesn't work: ...
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How to convert a ruby hash object to JSON?

How to convert a ruby hash object to JSON? So I am trying this example below & it doesn't work? 5 Answers ...