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# List columns {#sec-list-columns}
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```{r}
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#| results: "asis"
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#| echo: false
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source("_common.R")
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status("drafting")
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```
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## Introduction
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<!--# TO DO: Write introduction. -->
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### Prerequisites
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In this chapter we'll continue using tidyr, which also provides a bunch of tools to rectangle your datasets.
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tidyr is a member of the core tidyverse.
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2022-05-14 04:46:49 +08:00
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```{r}
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#| label: setup
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#| message: false
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2021-02-22 08:22:15 +08:00
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library(tidyverse)
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```
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<!--# TO DO: Write chapter around unnest, hoist, etc. -->
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