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New posts in data.table

Convert a data frame to a data.table without copy

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How to get week numbers from dates?

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Extract a column from a data.table as a vector, by position

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Use a value from the previous row in an R data.table calculation

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When should I use the := operator in data.table?

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Filtering out duplicated/non-unique rows in data.table

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How to replace NA values in a table for selected columns

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Extract row corresponding to minimum value of a variable by group

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Split text string in a data.table columns

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dplyr on data.table, am I really using data.table?

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Apply a function to every specified column in a data.table and update by reference

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dplyr mutate/replace several columns on a subset of rows

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Select / assign to data.table when variable names are stored in a character vector

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What's the fastest way to merge/join data.frames in R?

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Getting the top values by group

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Pass column name in data.table using variable [duplicate]

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Cleaning `Inf` values from an R dataframe

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What is the purpose of setting a key in data.table?

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Convert column classes in data.table

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How to reorder data.table columns (without copying)

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