shallow: shallow copy a 'data.table'
In PayamEmami/mixedcirc: Circadian rhythm analysis using mixed models

View source: R/mixedcirc_tss_calculation.R

shallow

R Documentation

shallow copy a `data.table`

Description

Convenience function to shallow copy a data.table (until this function is exported in the data.table package). For internal use only.

Usage

shallow(x, cols = names(x), reset_class = FALSE)

Arguments

`x`	A `data.table`.
`cols`	Character vector of column names (from `x`).
`reset_class`	logical (default `FALSE`). If `TRUE`, resets the class to `"data.table", "data.frame"`.

Value

A shallow copied data.table.

Examples

## Not run: 
# For internal use only
library(data.table)
x <- data.table(a=1:2, b=3:4)
setattr(x, 'class', c("tmp", class(x)))

y <- gread:::shallow(x) # only copies column pointers
class(y) # class(x) is retained

## End(Not run)

PayamEmami/mixedcirc documentation built on Jan. 15, 2025, 5:36 p.m.