R: Parse using the "best" type

parse_guess {readr} | R Documentation

## Parse using the "best" type

### Description

`parse_guess()` returns the parser vector; `guess_parser()` returns the name of the parser. These functions use a number of heuristics to determine which type of vector is "best". Generally they try to err of the side of safety, as it's straightforward to override the parsing choice if needed.

### Usage

    parse_guess(x, na = c("", "NA"), locale = default_locale())

    col_guess()

    guess_parser(x, locale = default_locale())

### Arguments

`x` | Character vector of values to parse.
`na` | Character vector of strings to use for missing values. Set this option to `character()` to indicate no missing values.
`locale` | The locale controls defaults that vary from place to place. The default locale is US-centric (like R), but you can use `locale()` to create your own locale that controls things like the default time zone, encoding, decimal mark, big mark, and day/month names.

### See Also

Other parsers: `col_skip`, `parse_datetime`, `parse_factor`, `parse_logical`, `parse_number`

### Examples

    # Logical vectors
    parse_guess(c("FALSE", "TRUE", "F", "T"))

    # Integers and doubles
    parse_guess(c("1","2","3"))
    parse_guess(c("1.6","2.6","3.4"))

    # Numbers containing grouping mark
    guess_parser("1,234,566")
    parse_guess("1,234,566")

    # ISO 8601 date times
    guess_parser(c("2010-10-10"))
    parse_guess(c("2010-10-10"))

[Package readr version 1.1.1 Index]