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Purge or recreate a Ruby on Rails database

...o this: This will reset your database and reload your current schema with all: rake db:reset db:migrate This will destroy your db and then create it and then migrate your current schema: rake db:drop db:create db:migrate All data will be lost in both scenarios. ...
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what’s the difference between Expires and Cache-Control headers?

... It's worth commenting that cache-control is what all browsers will use, but it's useful to specify both headers just in case there are old proxies in the way. – Nacho Coloma Sep 17 '12 at 14:33 ...
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execute function after complete page load

... why jQuery will most probably implement some heavy workarounds to support all the browsers. And this will make it very difficult to "exactly" simulate the behavior using plain Javascript (but not impossible of course). as Jeffrey Sweeney and J Torres suggested, i think its better to have a setTime...
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How do you determine the ideal buffer size when using FileInputStream?

...as well. This is why you see most buffers sized as a power of 2, and generally larger than (or equal to) the disk block size. This means that one of your stream reads could result in multiple disk block reads - but those reads will always use a full block - no wasted reads. Now, this is offset qu...
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Change the color of glyphicons to blue in some- but not at all places using Bootstrap 2

...for my UI. I want to change the color of my glyphicons to blue, but not in all places. In some places it should use the default color. ...
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View list of all JavaScript variables in Google Chrome Console

In Firebug, the DOM tab shows a list of all your public variables and objects. In Chrome's console you have to type the name of the public variable or object you want to explore. ...
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Who is “us” and who is “them” according to Git?

...The reason is that Git uses the same merge-engine for rebase, and it's actually cherry-picking your stuff into the upstream branch. us = into, them = from. share | improve this answer | ...
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use localStorage across subdomains

...sidered a subdomain (a stupid decision if you ask me). If a user was originally on site.com and decides to type in www . site.com on her next visit, all her personal data will be inaccessible. How do I get all my "subdomains" to share the same localStorage as the main domain? ...
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How do I get the value of a textbox using jQuery?

...o be flagged as "spammy" by the community. If you're doing this then it usually means the questions are duplicates so flag them as such instead: stackoverflow.com/questions/1320088 – Kev Mar 8 '12 at 23:55 ...
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What exactly does the post method do?

...() : Starts executing the active part of the class' code. This method is called when a thread is started that has been created with a class which implements Runnable. getView().post(new Runnable() { @Override public void run() { getView().startAnimation(a); ...