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What is the purpose of the single underscore “_” variable in Python?

...nt) in an interactive interpreter session. This precedent was set by the standard CPython interpreter, and other interpreters have followed suit As a general purpose "throwaway" variable name to indicate that part of a function result is being deliberately ignored (Conceptually, it is being discarde...
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Is file append atomic in UNIX?

...n NFS. But assuming you write to a log file you opened in 'O_APPEND' mode and keep your lines (including newline) under 'PIPE_BUF' bytes long, you should be able to have multiple writers to a log file without any corruption issues. Any interrupts will arrive before or after the write, not in the m...
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Difference between Math.Floor() and Math.Truncate()

What is the difference between Math.Floor() and Math.Truncate() in .NET? 12 Answers ...
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How to push both value and key into PHP array

... How to add multiple keys and values to an array? for example I have [indexname1] = $value1 and [indexname2] = $value2, and I want to add them to $arrayname – King Goeks Oct 30 '13 at 7:59 ...
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Source unreachable when using the NuGet Package Manager Console

...in source control. There is no way to do this from the UI so I use the command line to get the proper version. 13 Answers ...
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Eclipse, regular expression search and replace

... as part of the replace string when performing a regular expression search and replace? 5 Answers ...
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How can I check if an argument is defined when starting/calling a batch file?

... The check for whether a commandline argument has been set can be [%1]==[], but, as Dave Costa points out, "%1"=="" will also work. I also fixed a syntax error in the usage echo to escape the greater-than and less-than signs. In addition, the exit needs...
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Facebook API - How do I get a Facebook user's profile image through the Facebook API (without requir

...s well. You can use the PHP's file_get_contents function to read that URL and process the retrieved data. Resource: http://developers.facebook.com/docs/api Note: In php.ini, you need to make sure that the OpenSSL extension is enabled to use thefile_get_contents function of PHP to read that URL. ...
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AngularJS HTTP post to PHP and undefined

...ngularjs setting of application/json as header, read the raw input in PHP, and then deserialize the JSON. That can be achieved in PHP like this: $postdata = file_get_contents("php://input"); $request = json_decode($postdata); $email = $request->email; $pass = $request->password; Alternatel...
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Using python map and other functional tools

This is quite n00bish, but I'm trying to learn/understand functional programming in python. The following code: 9 Answers ...