## Overview

`dfidx` is a small `R` package which is intended to deal efficiently
with data frames when each observation is identified by a combination
of values of two variables (indexes). `dfidx` exports the function
`dfidx` which takes as main argument a data frame and returns a
`dfidx` object and the `idx`/`idx_name` functions which respectively
return one or all of the indexes and their names. Methods are provided
for `R`'s extractors.

## Installation

`dfidx` is on `CRAN`. Use : `install.packages("dfidx")`.

To install the developping version, use :
`remotes::install_github("ycroissant/dfidx")`.
