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New posts in data.table

data.table: performance of binary search VS vector scan

r data.table subset

What's the higher-performance alternative to for-loops for subsetting data by group-id?

r performance loops data.table subset

fast join data.table (potential bug, checking before reporting)

r merge data.table

data.table NOT summarizing properly by two columns

r data.table

How to aggregate (using "by") a data.table with customized column name without ":="?

r data.table

`j` doesn't evaluate to the same number of columns for each group

r data.table

Fast way to split string and convert to long format in data.table

r substring data.table data-manipulation

What's the fastest way to subset a data.table?

r data.table

dynamically assign number of splits in data.table tstrsplit

r split data.table

dplyr rowwise by some columns

r data.table dplyr

Randomise order of groups in R data table while preserving internal order of groups

r data.table

Why does `substitute` work in multiple lines, but not in a single line?

r data.table non-standard-evaluation

How can I evaluate (or create) an on the fly column in data.table in r

r data.table

Number of Unique Obs by Variable in a Data Table

r unique data.table variable-length

Why is intersect(...) faster than data table join?

r data.table

Retain and lag function in R as SAS

r data.table

data.table - group by all except one column

r data.table

data.table := assignments when variable has same name as a column

r data.table

Rolling Text Concatenation with Data.Table in R

r data.table

data.table - subsetting based on variable whose name is a column, too

r data.table
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