Just like a data.frame but without rownames, up to 10 times faster, up to 10 times less memory

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Documentation for package `data.table' version 1.0

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as.data.frame.data.table data.table support functions
as.data.table data.table support functions
as.data.table.data.table data.table support functions
as.data.table.matrix data.table support functions
as.matrix.data.table data.table support functions
cbind.data.table data.table support functions
data.table Just like a data.frame, but without row names
dim.data.table data.table support functions
dimnames.data.table data.table support functions
dimnames<-.data.table data.table support functions
head.data.table data.table support functions
is.data.table data.table support functions
last Last item of an object
NCOL data.table support functions
NROW data.table support functions
print.data.table data.table support functions
rbind.data.table data.table support functions
subset.data.table data.table support functions
tables Lists all objects of class 'data.table'
tail.data.table data.table support functions
[.data.table data.table support functions
[<-.data.table data.table support functions