Convert a string to uppercase

Source code

Description

Transform to uppercase variant.

Usage

<Expr>$str$to_uppercase()

Value

A polars expression

Examples

library("polars")

pl$select(
  pl$lit(c("A", "b", "c", "1", NA))$str$to_uppercase()
)$to_series()

#> shape: (5, 1)
#> ┌─────────┐
#> │ literal │
#> │ ---     │
#> │ str     │
#> ╞═════════╡
#> │ A       │
#> │ B       │
#> │ C       │
#> │ 1       │
#> │ null    │
#> └─────────┘