Extract the number of days in the month from the underlying Date representation.

Source code

Description

Extract the number of days in the month from the underlying Date representation.

Usage

<Expr>$dt$days_in_month()

Value

A polars expression

Examples

library("polars")

df <- pl$DataFrame(date = as.Date(c("2020-01-01", "2020-02-01", "2020-03-01")))

df$with_columns(
  days_in_month = pl$col("date")$dt$days_in_month()
)

#> shape: (3, 2)
#> ┌────────────┬───────────────┐
#> │ date       ┆ days_in_month │
#> │ ---        ┆ ---           │
#> │ date       ┆ i8            │
#> ╞════════════╪═══════════════╡
#> │ 2020-01-01 ┆ 31            │
#> │ 2020-02-01 ┆ 29            │
#> │ 2020-03-01 ┆ 31            │
#> └────────────┴───────────────┘