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Fastest way to replace NAs in a large data.table
I have a large data.table , with many missing values scattered throughout its ~200k rows and 200 columns. I would like to re code those NA values to zeros as efficiently as possible.
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How to fix corrupted git repository?
I tried cloning my repository which I keep on my Ubuntu one folder to a new machine and I got this:
14 Answers
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Listing only directories in UNIX
I want to list only the directories in specified path ( ls doesn't have such option).
Also, can this be done with a single line command?
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Difference between malloc and calloc?
What is the difference between doing:
14 Answers
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Extracting the last n characters from a string in R
How can I get the last n characters from a string in R?
Is there a function like SQL's RIGHT?
15 Answers
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Using Html.ActionLink to call action on different controller
I am trying to navigate between controllers using ActionLink . I will tell my problem with an example.
9 Answers
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Current time formatting with Javascript
I want to get current time in a specific format with javascript.
14 Answers
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Microsoft.Office.Core Reference Missing
Using the example provided in codeproject I am struggling to work out where I can find the reference to the library Microsoft.Office.Core.
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What is the best algorithm for overriding GetHashCode?
In .NET, the GetHashCode method is used in a lot of places throughout the .NET base class libraries. Implementing it properly is especially important to find items quickly in a collection or when determining equality.
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