Creates a new builder from a `MutableBuffer`.
(buffer: MutableBuffer, len: usize)
| 88 | |
| 89 | /// Creates a new builder from a `MutableBuffer`. |
| 90 | pub fn new_from_buffer(buffer: MutableBuffer, len: usize) -> Self { |
| 91 | let capacity = buffer.len() * 8; |
| 92 | assert!(len <= capacity); |
| 93 | |
| 94 | let bitmap_builder = Some(BooleanBufferBuilder::new_from_buffer(buffer, len)); |
| 95 | Self { |
| 96 | bitmap_builder, |
| 97 | len, |
| 98 | capacity, |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | /// Appends `n` `true`s into the builder |
| 103 | /// to indicate that these `n` items are not nulls. |