Concatenation

Coral.Frame.concat vertically stacks frames with the same ordered schema.

The current first-pass parity slice supports IntCol, FloatCol, StringCol, and BoolCol in concat.

module Coral.BookConcat
import Coral.Frame (from_pairs, concat, nrows, int_col_of_list)
export (main)
def main() -> int64 = {
  lhs = from_pairs([("id", int_col_of_list([cast(1, int64), cast(2, int64)])), ("flag", BoolCol(neq(to_tensor([cast(1, int64), cast(0, int64)]), to_tensor([cast(0, int64), cast(0, int64)]))))])
  rhs = from_pairs([("id", int_col_of_list([cast(3, int64)])), ("flag", BoolCol(neq(to_tensor([cast(1, int64)]), to_tensor([cast(0, int64)]))))])
  nrows(concat([lhs, rhs]))
}