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How do I import a Swift file from another Swift file?
... base module in the test file. In my case, my target is called 'myproject' and I added import myproject and the class was recognised.
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pandas: multiple conditions while indexing data frame - unexpected behavior
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As you can see, the AND operator drops every row in which at least one
value equals -1. On the other hand, the OR operator requires both
values to be equal to -1 to drop them.
That's right. Remember that you're writing the condition in te...
Android. Fragment getActivity() sometimes returns null
...ole error reports sometimes I see reports with NPE issue. I do not understand what is wrong with my code. On emulator and my device application works good without forcecloses, however some users get NullPointerException in fragment class when the getActivity() method is called.
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Two single-column indexes vs one two-column index in MySQL?
I'm faced with the following and I'm not sure what's best practice.
4 Answers
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Is there any reason to use a synchronous XMLHttpRequest?
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I think they might become more popular as HTML 5 standards progress. If a web application is given access to web workers, I could foresee developers using a dedicated web worker to make synchronous requests for, as Jonathan said, to ensure one request happens before another....
What is your single most favorite command-line trick using Bash? [closed]
...es with suffixes quickly:
cp /home/foo/realllylongname.cpp{,-old}
This expands to:
cp /home/foo/realllylongname.cpp /home/foo/realllylongname.cpp-old
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answered Sep 16 '0...
Entity Framework Provider type could not be loaded?
...ed this too. If you create a library that uses EF, VS will put the EF.dll and the EF.SqlServer.dll into that build folder. But if you now have another program make use of your library, only the EF.dll will be put into this build folder. The EF.SqlServer.dll is missing. If you add it manually to ...
Comments in Android Layout xml
...u cannot use them inside tags
<EditText <!--This is not valid--> android:layout_width="fill_parent" />
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When to use virtual destructors?
I have a solid understanding of most OOP theory but the one thing that confuses me a lot is virtual destructors.
17 Answe...
Set a default parameter value for a JavaScript function
...ments which I set a default on, which get used if the value isn't defined (and ignored if the value is passed). In Ruby you can do it like this:
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