Struct mz_repr::row::RowRef

#[repr(transparent)]
pub struct RowRef {
    data: [u8],
}

A wrapper around a byte slice that guarantees the data are row-formatted.

This type exists to allow row-formatted data to be stored in types that need not contain a Row, for example large contiguous [u8] allocations. It is not expected that most users will use this type, especially as its only constructor is unsafe.

Fields

data: [u8]

Implementations

impl RowRef

pub unsafe fn from_bytes_unchecked(data: &[u8]) -> &Self

Construct a RowRef from a byte slice.

Safety

This method is unsafe because if the byte slice is not a valid row encoding, then unpacking its contents can cause undefined behavior.

pub fn unpack(&self) -> Vec<Datum<'_>>

Unpack self into a Vec<Datum> for efficient random access.

pub fn unpack_first(&self) -> Datum<'_>

Return the first Datum in self

Panics if the Row is empty.

pub fn iter(&self) -> DatumListIter<'_>

Iterate the Datum elements of the Row.

pub fn data(&self) -> &[u8]

For debugging only

pub fn is_empty(&self) -> bool

True iff there is no data in this Row

Trait Implementations

impl Debug for RowRef

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Debug representation using the internal datums

impl Display for RowRef

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Display representation using the internal datums

impl<'a> IntoIterator for &'a RowRef

type Item = Datum<'a>

The type of the elements being iterated over.

type IntoIter = DatumListIter<'a>

Which kind of iterator are we turning this into?

fn into_iter(self) -> DatumListIter<'a>

Creates an iterator from a value.