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How to select the rows with maximum values in each group with dplyr? [duplicate]
I would like to select a row with maximum value in each group with dplyr.
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Best way to make Java's modulus behave like it should with negative numbers?
In java when you do
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Defining static const integer members in class definition
My understanding is that C++ allows static const members to be defined inside a class so long as it's an integer type.
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What's the fastest way to loop through an array in JavaScript?
I learned from books that you should write for loop like this：
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Is it possible to select the last n items with nth-child?
Using a standard list, I'm trying to select the last 2 list items. I've various permutations of An+B but nothing seems to select the last 2:
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Regex select all text between tags
What is the best way to select all the text between 2 tags - ex: the text between all the 'pre' tags on the page.
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How do I break a string across more than one line of code in JavaScript?
Is there a character in JavaScript to break up a line of code so that it is read as continuous despite being on a new line?
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Passing variable number of arguments around
Say I have a C function which takes a variable number of arguments: How can I call another function which expects a variable number of arguments from inside of it, passing all the arguments that got into the first function?
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String.Join method that ignores empty strings?
The VB.NET method String.Join(separator, stringArray) is similar to PHP's implode, but any null elements in the array are replaced with an empty string, so thatc:
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How can the Euclidean distance be calculated with NumPy?
I have two points in 3D:
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