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Transpose a data frame
I need to transpose a large data frame and so I used:
4 Answers
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Meaning of Android Studio error: Not annotated parameter overrides @NonNull parameter
I'm trying out Android Studio. Upon creating a new project and adding a default onSaveInstanceState method to the create MyActivity class, when I try to commit the code to Git, I get a strange error I don't understand. The code is this:
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What Makes a Method Thread-safe? What are the rules?
Are there overall rules/guidelines for what makes a method thread-safe? I understand that there are probably a million one-off situations, but what about in general? Is it this simple?
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What is the type of lambda when deduced with “auto” in C++11?
I had a perception that, type of a lambda is a function pointer. When I performed following test, I found it to be wrong ( demo ).
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How to find an element by matching exact text of the element in Capybara
I have following two elements in HTML
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Hide all but $(this) via :not in jQuery selector
Advanced title, simple question:
4 Answers
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jQuery - Detect value change on hidden input field
I have a hidden text field whose value gets updated via an AJAX response.
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How to loop over files in directory and change path and add suffix to filename
I need to write a script that starts my program with different arguments, but I'm new to Bash. I start my program with:
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Python nonlocal statement
What does the Python nonlocal statement do (in Python 3.0 and later)?
9 Answers
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How to compile a static library in Linux?
I have a question: How to compile a static library in Linux with gcc , i.e. I need to compile my source code into a file named out.a. Is it sufficient to simply compile with the command gcc -o out.a out.c ? I'm not quite familiar with gcc , hope anyone can give me a hand.
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