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Non-static variable cannot be referenced from a static context

... You must understand the difference between a class and an instance of that class. If you see a car on the street, you know immediately that it's a car even if you can't see which model or type. This is because you compare what you see with t...
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Most Pythonic way to provide global configuration variables in config.py? [closed]

...an also pass in additional defaults from your code. It also maps attribute and mapping style syntax to the same configuration object. share | improve this answer | follow ...
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LF will be replaced by CRLF in git - What is that and is it important? [duplicate]

...ne feed (LF). In windows a line is represented with a carriage return (CR) and a line feed (LF) thus (CRLF). when you get code from git that was uploaded from a unix system they will only have an LF. If you are a single developer working on a windows machine, and you don't care that git automatical...
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How to remove unused C/C++ symbols with GCC and ld?

I need to optimize the size of my executable severely ( ARM development) and I noticed that in my current build scheme ( gcc + ld ) unused symbols are not getting stripped. ...
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Android Studio says “cannot resolve symbol” but project compiles

I'm importing twitter4j in AndroidStudio, using the following in my build.gradle: 27 Answers ...
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What is the difference between Forking and Cloning on GitHub?

I'd like to know the differences between doing a Fork of a project and doing a clone of it. 9 Answers ...
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Is it smart to replace boost::thread and boost::mutex with c++11 equivalents?

... is that my genius project manager thinks that boost is another dependency and that it is horrible because "you depend on it"(I tried explaining the quality of boost, then gave up after some time :( ). Smaller reason why I would like to do it is that I would like to learn c++11 features, because peo...
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MySQL “Group By” and “Order By”

I want to be able to select a bunch of rows from a table of e-mails and group them by the from sender. My query looks like this: ...
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NULL values inside NOT IN clause

...t I thought were identical queries one using a not in where constraint and the other a left join . The table in the not in constraint had one null value (bad data) which caused that query to return a count of 0 records. I sort of understand why but I could use some help fully grasping the con...
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What is Linux’s native GUI API?

Both Windows (Win32 API) and OS X (Cocoa) have their own APIs to handle windows, events and other OS stuff. I have never really got a clear answer as to what Linux’s equivalent is? ...