Struct VarLenArray

pub struct VarLenArray<'a, T> { /* private fields */ }

An array of items of non-uniform length.

Random access into this array cannot be especially efficient, since it requires a linear scan.

Implementations

impl<'a, T: FontRead<'a> + VarSize> VarLenArray<'a, T>

pub fn get(&self, idx: usize) -> Option<Result<T, ReadError>>

Return the item at the provided index.

Performance

Determining the position of an item in this collection requires looking at all the preceding items; that is, it is O(n) instead of O(1) as it would be for a Vec.

As a consequence, calling this method in a loop could potentially be very slow. If this is something you need to do, it will probably be much faster to first collect all the items into a Vec beforehand, and then fetch them from there.

pub fn iter(&self) -> impl Iterator<Item = Result<T, ReadError>> + 'a

Return an iterator over this array’s items.

Trait Implementations

impl<'a, T> FontRead<'a> for VarLenArray<'a, T>

fn read(data: FontData<'a>) -> Result<Self, ReadError>

Read an instance of Self from the provided data, performing validation.