def transform(block: Block) -> Block:
block = BlockAccessor.for_block(block)
builder = block.builder()
for row in block.iter_rows():
if fn(row):
builder.add(row)
return builder.build()
def transform(block: Block) -> Block:
block = BlockAccessor.for_block(block)
builder = DelegatingArrowBlockBuilder()
for row in block.iter_rows():
for r2 in fn(row):
builder.add(r2)
return builder.build()
def agg(block: Block) -> int:
block = BlockAccessor.for_block(block)
return sum(block.iter_rows())