Low-level constructor for weeknumber vectors

This is a low-level constructor that creates weeknumber vectors from their underlying double representation.

Usage

new_weeknumber(x = double())

Arguments

x

A double vector of ISO week offsets from 2000-W01.

Value

A weeknumber vector.

Details

The underlying double values count ISO weeks relative to 2000-W01, so 0 represents 2000-W01, 1 represents 2000-W02, and so on. Non-finite values are converted to NA_real_.

This constructor follows the vctrs convention of validating only the underlying storage type. Use weeknumber() for a user-facing helper and is_weeknumber() to test for the class.

Examples

new_weeknumber(c(0, 1, NA_real_))
#> <weeknumber[3]>
#> [1] 2000-W01 2000-W02 <NA>