Enum LevelDataRef 

pub(crate) enum LevelDataRef<'a> {
    Absent,
    Materialized(&'a [i16]),
    Uniform {
        value: i16,
        count: usize,
    },
}

Borrowed view of level data, analogous to &str for LevelData’s String.

LevelDataRef can be constructed from LevelData and directly from an existing &[i16] without allocating.

The variants are different physical representations of the same logical sequence of levels.

Variants

Absent

Materialized(&'a [i16])

Uniform

Fields

value: i16

count: usize

Implementations

impl<'a> LevelDataRef<'a>

pub(crate) fn len(self) -> usize

pub(crate) fn first(self) -> Option<i16>

pub(crate) fn value_at(self, idx: usize) -> Option<i16>

pub(crate) fn slice(self, offset: usize, len: usize) -> Self

Trait Implementations

impl<'a> Clone for LevelDataRef<'a>

fn clone(&self) -> LevelDataRef<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for LevelDataRef<'a>

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

Formats the value using the given formatter.

impl<'a> From<&'a [i16]> for LevelDataRef<'a>

fn from(levels: &'a [i16]) -> Self

Converts to this type from the input type.

impl<'a> From<Option<&'a [i16]>> for LevelDataRef<'a>

fn from(levels: Option<&'a [i16]>) -> Self

Converts to this type from the input type.

impl<'a> Copy for LevelDataRef<'a>