Boolean

The B8 type is a one-byte boolean. Atoms are built with Value::bool, vectors with Value::bool_vec.

Assume a live runtime

use rayforce::{Runtime, Value};
let _rt = Runtime::new()?;

Atoms

assert!(Value::bool(true).as_bool()?);
assert!(!Value::bool(false).as_bool()?);

Vectors

let b = Value::bool_vec(&[true, false, true]);
assert_eq!(b.len(), 3);

Reading the buffer

Booleans are stored one per byte. bool_slice() returns the raw &[u8] backing store, where 1 is true and 0 is false — zero-copy, no allocation.

let b = Value::bool_vec(&[true, false, true]);
assert_eq!(b.bool_slice()?, &[1u8, 0, 1]);

To get a Value per element instead, use get:

let b = Value::bool_vec(&[true, false]);
assert!(b.get(0)?.as_bool()?);
assert!(!b.get(1)?.as_bool()?);

bool_slice is for B8 vectors only

bool_slice() returns &[u8] because that is the on-wire layout; it is not the same as as_slice::<u8>() on a U8 vector. Use it when you want to scan or memcpy a boolean column without boxing each element.

See Vectors for indexing, slicing, and mutation that apply to every vector type.