Copy a data table, with a log

data.table modifies by reference, and data.table::copy() is the way out of that: it is the point where a second, independent table comes into existence. dtlog says so, and says how big the copy was.

Usage

copy(x)

Arguments

x

The object to copy.

Value

The deep copy that data.table::copy() returns.

Examples

dt <- data.table::data.table(a = 1:3)
safe <- data.table::copy(dt)