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data.table vs dplyr: can one do something well the other can't or does poorly?
...ce): Speed, Memory usage, Syntax and Features.
My intent is to cover each one of these as clearly as possible from data.table perspective.
Note: unless explicitly mentioned otherwise, by referring to dplyr, we refer to dplyr's data.frame interface whose internals are in C++ using Rcpp.
The ...
Filter Java Stream to 1 and only 1 element
...nd elements in a LinkedList . I want to guarantee, however, that there is one and only one match to the filter criteria.
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Convert string to number and add one
I want to turn the value I get from the id into a number and add one to it then pass the new value into the dosomething() function to use. When I tried this and the value is one I get back 11 not 2.
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Is there a difference between using a dict literal and a dict constructor?
...he actual dict instance to be created. Braces creates the dict instance in one step.
– NeilG
May 14 '19 at 12:59
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How do you use “
...ion. This is useful because it allows us to have two levels of parameters. One level of parameters (the parent) controls how the function works. The other level (the child) does the work. The following example shows how can use this idea to generate a family of power functions. The parent function (...
MySQL combine two columns into one column
I'm trying to find a way to combine two columns into one, but keep getting the value '0' in the column instead to the combination of the words.
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How to split one string into multiple strings separated by at least one space in bash shell?
I have a string containing many words with at least one space between each two. How can I split the string into individual words so I can loop through them?
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Apache Prefork vs Worker MPM
...le, I see Prefork and Worker MPM defined. What is the difference and which one is Apache using?
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Ukkonen's suffix tree algorithm in plain English
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The following is an attempt to describe the Ukkonen algorithm by first showing what it does when the string is simple (i.e. does not contain any repeated characters), and then extending it to the full algorithm.
First, a few preliminary statements.
What we are building...
Mock functions in Go
...h dependencies. I want to be able to replace some function calls with mock ones. Here's a snippet of my code:
6 Answers
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