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Indicate if this expression expands to columns that match a regex pattern

Description

Indicate if this expression expands to columns that match a regex pattern

Usage

<Expr>$meta$is_regex_projection()

Value

A logical value.

Examples

library("polars")

e <- pl$col("^.*$")$name$prefix("foo_")
e$meta$is_regex_projection()

#> [1] TRUE