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How to check if a specific key is present in a hash or not?
I want to check whether the "user" key is present or not in the session hash. How can I do this?
7 Answers
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How to clear variables in ipython?
Sometimes I rerun a script within the same ipython session and I get bad surprises when variables haven't been cleared. How do I clear all variables?
And is it possible to force this somehow every time I invoke the magic command %run?
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Difference between classification and clustering in data mining? [closed]
Can someone explain what the difference is between classification and clustering in data mining?
21 Answers
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python max function using 'key' and lambda expression
I come from OOP background and trying to learn python.
I am using the max function which uses a lambda expression to return the instance of type Player having maximum totalScore among the list players .
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java.lang.ClassNotFoundException: Didn't find class on path: dexpathlist
I'm currently working on a project in which I have to use purely native ndk. It worked when I try running an helloworld example from Irrlicht engine source. Then I try using it in my project following the same format of that example. But I got:
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Can I disable a CSS :hover effect via JavaScript?
...trying to prevent the browser from using the :hover effect of the CSS, via JavaScript.
9 Answers
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MemoryCache does not obey memory limits in configuration
I’m working with the .NET 4.0 MemoryCache class in an application and trying to limit the maximum cache size, but in my tests it does not appear that the cache is actually obeying the limits.
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__FILE__, __LINE__, and __FUNCTION__ usage in C++
Presuming that your C++ compiler supports them, is there any particular reason not to use __FILE__ , __LINE__ and __FUNCTION__ for logging and debugging purposes?
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What's the u prefix in a Python string?
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6 Answers
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onclick open window and specific size
I have a link like this:
7 Answers
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