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data.table vs dplyr: can one do something well the other can't or does poorly?

I'm relatively familiar with data.table , not so much with dplyr . I've read through some dplyr vignettes and examples that have popped up on SO, and so far my conclusions are that: ...
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Is there a way to 'pretty' print MongoDB shell output to a file?

Specifically, I want to print the results of a mongodb find() to a file. The JSON object is too large so I'm unable to view the entire object with the shell window size. ...
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How do you determine the ideal buffer size when using FileInputStream?

I have a method that creates a MessageDigest (a hash) from a file, and I need to do this to a lot of files (>= 100,000). How big should I make the buffer used to read from the files to maximize performance? ...
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Why would a static nested interface be used in Java?

I have just found a static nested interface in our code-base. 11 Answers 11 ...
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When to use Mockito.verify()?

I write jUnit test cases for 3 purposes: 6 Answers 6 ...
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Returning a C string from a function

I am trying to return a C string from a function, but it's not working. Here is my code. 14 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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How to sort the letters in a string alphabetically in Python

Is there an easy way to sort the letters in a string alphabetically in Python? 7 Answers ...
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How can I move a tag on a git branch to a different commit?

I created a tag on the master branch called v0.1 like this: 9 Answers 9 ...
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Should import statements always be at the top of a module?

PEP 08 states: 20 Answers 20 ...