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How to access the last value in a vector?
Suppose I have a vector that is nested in a dataframe one or two levels. Is there a quick and dirty way to access the last value, without using the length() function? Something ala PERL's $# special var?
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How is Python's List Implemented?
Is it a linked list, an array? I searched around and only found people guessing. My C knowledge isn't good enough to look at the source code.
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How to effectively work with multiple files in Vim
I've started using Vim to develop Perl scripts and am starting to find it very powerful.
28 Answers
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Argparse: Required arguments listed under “optional arguments”?
I use the following simple code to parse some arguments; note that one of them is required. Unfortunately, when the user runs the script without providing the argument, the displayed usage/help text does not indicate that there is a non-optional argument, which I find very confusing. How can I get p...
How do you create an asynchronous method in C#?
Every blog post I've read tells you how to consume an asynchronous method in C#, but for some odd reason never explain how to build your own asynchronous methods to consume. So I have this code right now that consumes my method:
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Should I put the Google Analytics JS in the or at the end of ?
Google gives me a piece of javascript and tells me to include it in the <head> .
7 Answers
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Find unused npm packages in package.json
Is there a way to determine if you have packages in your package.json file that are no longer needed?
6 Answers
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How to make an Android device vibrate?
I wrote an Android application. Now, I want to make the device vibrate when a certain action occurs. How can I do this?
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How to automatically generate a stacktrace when my program crashes
I am working on Linux with the GCC compiler. When my C++ program crashes I would like it to automatically generate a stacktrace.
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