R: Create column specification

cols {readr} | R Documentation

## Create column specification

### Description

Create column specification

### Usage

    cols(..., .default = col_guess())

    cols_only(...)

### Arguments

`...` | Either column objects created by `col_*()`, or their abbreviated character names. If you're only overriding a few columns, it's best to refer to columns by name. If not named, the column types must match the column names exactly.
`.default` | Any named columns not explicitly overridden in `...` will be read with this column type.

### Examples

    cols(a = col_integer())
    cols_only(a = col_integer())

    # You can also use the standard abreviations
    cols(a = "i")
    cols(a = "i", b = "d", c = "_")

[Package readr version 1.1.0 Index]