A Simple S3-Class for Years

A simple data type for storing years. A date_y object is just an integer with an additional class attribute.

date_y(y)

is_date_y(x)

as_date_y(x)

Arguments

y	year
x	any R object

Value

date_y returns an object of type date_y

is_date_y returns TRUE or FALSE depending on whether its argument is of type date_y or not.

as_date_m attempts to coerce its argument to date_y type

See also

Other date_xx subclasses: date_ym(), date_yq(), date_yw()

Examples

date_y(2013)
#> [1] "2013"

as_date_y(2016)
#> [1] "2016"