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How do I force Postgres to use a particular index?

How do I force Postgres to use an index when it would otherwise insist on doing a sequential scan? 6 Answers ...
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How to send an email with Python?

...this example, assume that # the text file contains only ASCII characters. with open(textfile, 'rb') as fp: # Create a text/plain message msg = MIMEText(fp.read()) # me == the sender's email address # you == the recipient's email address msg['Subject'] = 'The contents of %s' % textfile msg['...
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How can I check if a directory exists in a Bash shell script?

What command can be used to check if a directory exists or not, within a Bash shell script? 35 Answers ...
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Failed to serialize the response in Web API with Json

I am working with ASP.NET MVC 5 Web Api. I want consult all my users. 27 Answers 27 ...
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Why does UITableViewCell remain highlighted?

...l to remain highlighted after being touched? I click the cell and can see it stays highlighted as a detail view is pushed. Once the detail view is popped, the cell is still highlighted. ...
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(413) Request Entity Too Large | uploadReadAheadSize

I've written a WCF service with .NET 4.0, which is hosted on my Windows 7 x64 Ultimate system with IIS 7.5. One of the service methods has an 'object' as argument and I'm trying to send a byte[] which contains a picture. As long as the file size of this picture is less then approx. 48KB, all goes ...
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How do you easily horizontally center a using CSS? [duplicate]

...ng to horizontally center a <div> block element on a page and have it set to a minimum width. What is the simplest way to do this? I want the <div> element to be inline with rest of my page. I'll try to draw an example: ...
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How do you write tests for the argparse portion of a python module? [closed]

I have a Python module that uses the argparse library. How do I write tests for that section of the code base? 9 Answers ...
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What exactly does the enable-background attribute do?

... It's supposed to make the background image available to child elements of the element it's specified on for things like filter effects that blend content with the background. There may be other uses, but that's the one I know...
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How does Git handle symbolic links?

If I have a file or directory that is a symbolic link and I commit it to a Git repository, what happens to it? 4 Answers ...