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How do I change the cursor between Normal and Insert modes in Vim?

I would like to know how to change, if possible, the cursor in Vim (in color, shape, etc.) depending on what mode you are in. ...
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Standard alternative to GCC's ##__VA_ARGS__ trick?

There is a well-known problem with empty args for variadic macros in C99. 10 Answers ...
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How can I generate an MD5 hash?

Is there any method to generate MD5 hash of a string in Java? 34 Answers 34 ...
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Changing every value in a hash in Ruby

I want to change every value in a hash so as to add '%' before and after the value so 11 Answers ...
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Is it possible to use the instanceof operator in a switch statement?

I have a question of using switch case for instanceof object: 24 Answers 24 ...
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How unique is UUID?

How safe is it to use UUID to uniquely identify something (I'm using it for files uploaded to the server)? As I understand it, it is based off random numbers. However, it seems to me that given enough time, it would eventually repeat it self, just by pure chance. Is there a better system or a patter...
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How to comment out a block of Python code in Vim

I was wondering if there was any key mapping in Vim to allow me to indent certain lines of code (whether those lines have been selected in visual mode, or n lines above/below current cursor position). ...
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android: move a view on touch move (ACTION_MOVE)

I'd like to do a simple control: a container with a view inside. If I touch the container and I move the finger, I want to move the view to follow my finger. ...
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Difference between

What is the difference between List<? super T> and List<? extends T> ? 14 Answers ...
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How do you implement a class in C? [closed]

Assuming I have to use C (no C++ or object oriented compilers) and I don't have dynamic memory allocation, what are some techniques I can use to implement a class, or a good approximation of a class? Is it always a good idea to isolate the "class" to a separate file? Assume that we can preallocate t...