Method: Polars::Expr#all

Defined in:
lib/polars/expr.rb

#all(ignore_nulls: true) ⇒ Boolean

Check if all boolean values in a Boolean column are true.

This method is an expression - not to be confused with Polars.all which is a function to select all columns.

Examples:

df = Polars::DataFrame.new(
  {"TT" => [true, true], "TF" => [true, false], "FF" => [false, false]}
)
df.select(Polars.col("*").all)
# =>
# shape: (1, 3)
# ┌──────┬───────┬───────┐
# │ TT   ┆ TF    ┆ FF    │
# │ ---  ┆ ---   ┆ ---   │
# │ bool ┆ bool  ┆ bool  │
# ╞══════╪═══════╪═══════╡
# │ true ┆ false ┆ false │
# └──────┴───────┴───────┘

Returns:



251
252
253
 
# File 'lib/polars/expr.rb', line 251

def all(ignore_nulls: true)
  wrap_expr(_rbexpr.all(ignore_nulls))
end