Struct qwt::qvector::QVectorBuilder

pub struct QVectorBuilder { /* private fields */ }

Builder struct to build a qvector by pushing symbol by symbol. The main reasons for this builder are

• we want to force qvector to be immutable. So, we don’t want any method that could change it;
• we want to save space when symbols are produced one after the other and store them using 2 bits each.

Implementations

impl QVectorBuilder

pub fn build(self) -> QVector

Build the qvector.

pub fn new() -> Self

Create a new empty dynamic quad vector.

pub fn with_capacity(n: usize) -> Self

Creates an empty dynamic quad vector with the capacity of n quad symbols.

Panics

Panics if the new capacity exceeds isize::MAX bytes.

pub fn push(&mut self, symbol: u8)

Appends the (last 2 bits of the) value symbol at the end of the quad vector.

It does not check if the value symbol fits is actually in [0..3]. The value is truncated to the two least significant bits.

Panics

Panics if the new capacity exceeds isize::MAX bytes.

Trait Implementations

impl Clone for QVectorBuilder

fn clone(&self) -> QVectorBuilder

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Default for QVectorBuilder

fn default() -> QVectorBuilder

Returns the “default value” for a type.

impl<T> Extend<T> for QVectorBuilder

where T: PrimInt + AsPrimitive<u8>,

fn extend<I>(&mut self, iter: I)

where I: IntoIterator<Item = T>,

Extends a collection with the contents of an iterator.

fn extend_one(&mut self, item: A)

🔬This is a nightly-only experimental API. (extend_one)

Extends a collection with exactly one element.

fn extend_reserve(&mut self, additional: usize)

🔬This is a nightly-only experimental API. (extend_one)

Reserves capacity in a collection for the given number of additional elements.

impl<T> FromIterator<T> for QVectorBuilder

where T: PrimInt + AsPrimitive<u8>,

fn from_iter<I>(iter: I) -> Self

where I: IntoIterator<Item = T>,

Creates a value from an iterator.

impl PartialEq for QVectorBuilder

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl Eq for QVectorBuilder

impl StructuralPartialEq for QVectorBuilder