Method: Polars::Expr#rechunk

Defined in:

lib/polars/expr.rb

#rechunk ⇒ Expr

Create a single chunk of memory for this Series.

Examples:

Create a Series with 3 nulls, append column a then rechunk

df = Polars::DataFrame.new({"a" => [1, 1, 2]})
df.select(Polars.repeat(nil, 3).append(Polars.col("a")).rechunk)
# =>
# shape: (6, 1)
# ┌────────┐
# │ repeat │
# │ ---    │
# │ i64    │
# ╞════════╡
# │ null   │
# │ null   │
# │ null   │
# │ 1      │
# │ 1      │
# │ 2      │
# └────────┘

Returns:

• (Expr)

# File 'lib/polars/expr.rb', line 879

def rechunk
  _from_rbexpr(_rbexpr.rechunk)
end