Method: Polars::StringExpr#pad_end

Defined in:
lib/polars/string_expr.rb

#pad_end(length, fill_char = " ") ⇒ Expr Also known as: ljust

Pad the end of the string until it reaches the given length.

Examples:

df = Polars::DataFrame.new({"a": ["cow", "monkey", "hippopotamus", nil]})
df.with_columns(padded: Polars.col("a").str.pad_end(8, "*"))
# =>
# shape: (4, 2)
# ┌──────────────┬──────────────┐
# │ a            ┆ padded       │
# │ ---          ┆ ---          │
# │ str          ┆ str          │
# ╞══════════════╪══════════════╡
# │ cow          ┆ cow*****     │
# │ monkey       ┆ monkey**     │
# │ hippopotamus ┆ hippopotamus │
# │ null         ┆ null         │
# └──────────────┴──────────────┘

Parameters:

  • length (Integer) —

    Pad the string until it reaches this length. Strings with length equal to or greater than this value are returned as-is.

  • fill_char (String) (defaults to: " ") —

    The character to pad the string with.

Returns:


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# File 'lib/polars/string_expr.rb', line 622

def pad_end(length, fill_char = " ")
  Utils.wrap_expr(_rbexpr.str_pad_end(length, fill_char))
end