Method has_true

arrow-buffer/src/buffer/boolean.rs:645–652

Returns whether there is at least one `true` value in this buffer. This is more efficient than `count_set_bits() > 0` because it can short-circuit as soon as a `true` value is found, without counting all set bits. Returns `false` for empty buffer.

(&self)

    ///
    /// Returns `false` for empty buffer.
    pub fn has_true(&self) -> bool {
        let bit_chunks = self.unaligned_bit_chunks();
        let chunks = bit_chunks.chunks();
        let mut exact = chunks.chunks_exact(Self::CHUNK_FOLD_BLOCK_SIZE);
        let found = bit_chunks.prefix().unwrap_or(0) != 0
            || exact.any(|block| block.iter().fold(0u64, |acc, &c| acc | c) != 0);
        found || exact.remainder().iter().any(|&c| c != 0) || bit_chunks.suffix().unwrap_or(0) != 0
    }

    /// Returns whether there is at least one `false` value in this buffer.
    ///