Method: Polars::StringExpr#strip_chars_start

Defined in:
lib/polars/string_expr.rb

#strip_chars_start(characters = nil) ⇒ Expr

Remove leading whitespace.

Examples:

df = Polars::DataFrame.new({"foo" => [" lead", "trail ", " both "]})
df.select(Polars.col("foo").str.strip_chars_start)
# =>
# shape: (3, 1)
# ┌────────┐
# │ foo    │
# │ ---    │
# │ str    │
# ╞════════╡
# │ lead   │
# │ trail  │
# │ both   │
# └────────┘

Parameters:

  • characters (String, nil) (defaults to: nil) —

    An optional single character that should be trimmed.

Returns:



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# File 'lib/polars/string_expr.rb', line 568

def strip_chars_start(characters = nil)
  characters = Utils.parse_into_expression(characters, str_as_lit: true)
  Utils.wrap_expr(_rbexpr.str_strip_chars_start(characters))
end