s3-factor.md
In constructive: Display Idiomatic Code to Construct Most R Objects

factor

Code
  construct(factor(month.abb))
Output
  factor(c("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"))
Code
  construct(factor(month.abb), opts_factor("next"))
Output
  c(5L, 4L, 8L, 1L, 9L, 7L, 6L, 2L, 12L, 11L, 10L, 3L) |>
    structure(
      levels = c("Apr", "Aug", "Dec", "Feb", "Jan", "Jul", "Jun", "Mar", "May", "Nov", "Oct", "Sep"),
      class = "factor"
    )
Code
  construct(factor(month.abb), opts_factor("integer"))
Output
  c(5L, 4L, 8L, 1L, 9L, 7L, 6L, 2L, 12L, 11L, 10L, 3L) |>
    structure(
      levels = c("Apr", "Aug", "Dec", "Feb", "Jan", "Jul", "Jun", "Mar", "May", "Nov", "Oct", "Sep"),
      class = "factor"
    )
Code
  construct(factor(month.abb, month.abb))
Output
  factor(
    c("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"),
    levels = c("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec")
  )
Code
  construct(factor(month.abb), opts_factor("as_factor"))
Output
  factor(c("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"))
Code
  construct(factor(month.abb, month.abb), opts_factor("as_factor"))
Output
  forcats::as_factor(c("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"))
Code
  construct(factor(month.abb), opts_factor("new_factor"))
Output
  vctrs::new_factor(
    c(5L, 4L, 8L, 1L, 9L, 7L, 6L, 2L, 12L, 11L, 10L, 3L),
    levels = c("Apr", "Aug", "Dec", "Feb", "Jan", "Jul", "Jun", "Mar", "May", "Nov", "Oct", "Sep")
  )
Code
  construct(factor(month.abb, month.abb), opts_factor("new_factor"))
Output
  vctrs::new_factor(
    1:12,
    levels = c("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec")
  )
Code
  construct(factor(month.abb, levels = c(month.abb, NA), exclude = NULL))
Output
  factor(
    c("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"),
    levels = c("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec", NA),
    exclude = NULL
  )
Code
  construct(factor(c(a = "foo")))
Output
  factor(c(a = "foo"))