Struct CqlVarintBorrowed

pub struct CqlVarintBorrowed<'b>(/* private fields */);

A borrowed version of native CQL varint representation.

Refer to the documentation of CqlVarint. Especially, see the disclaimer about non-normalized values.

Implementations

impl<'b> CqlVarintBorrowed<'b>

Constructors from bytes

pub fn from_signed_bytes_be_slice(digits: &'b [u8]) -> Self

Creates a CqlVarintBorrowed from a slice of bytes in two’s complement binary big-endian representation.

See: disclaimer about non-normalized values.

impl CqlVarintBorrowed<'_>

Conversion to bytes

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

Returns a slice of bytes in two’s complement binary big-endian representation.

Trait Implementations

impl<'b> Clone for CqlVarintBorrowed<'b>

fn clone(&self) -> CqlVarintBorrowed<'b>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'b> Debug for CqlVarintBorrowed<'b>

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

Formats the value using the given formatter.

impl<'b, 'frame, 'metadata> DeserializeValue<'frame, 'metadata> for CqlVarintBorrowed<'b>

where 'frame: 'b,

fn type_check(typ: &ColumnType<'_>) -> Result<(), TypeCheckError>

Checks that the column type matches what this type expects.

fn deserialize( typ: &'metadata ColumnType<'metadata>, v: Option<FrameSlice<'frame>>, ) -> Result<Self, DeserializationError>

Deserialize a column value from given serialized representation.

impl Hash for CqlVarintBorrowed<'_>

Computes the hash of normalized CqlVarintBorrowed.

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for CqlVarintBorrowed<'_>

Compares two CqlVarintBorrowed values after normalization.

Example

let non_normalized_bytes = &[0x00, 0x01];
let normalized_bytes = &[0x01];
assert_eq!(
    CqlVarintBorrowed::from_signed_bytes_be_slice(non_normalized_bytes),
    CqlVarintBorrowed::from_signed_bytes_be_slice(normalized_bytes)
);

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl SerializeValue for CqlVarintBorrowed<'_>

fn serialize<'b>( &self, typ: &ColumnType<'_>, writer: CellWriter<'b>, ) -> Result<WrittenCellProof<'b>, SerializationError>

Serializes the value to given CQL type.

impl<'b> Emptiable for CqlVarintBorrowed<'b>

impl<'b> Eq for CqlVarintBorrowed<'b>