Struct Seq

pub struct Seq<T>(/* private fields */);

A lazily evaluated sequence of functions.

Implementations

impl<T> Seq<T>

pub fn new() -> Seq<T>

Constructs a new, empty Seq<T>.

pub fn is_empty(&self) -> bool

Returns true if the sequence contains no elements.

pub fn capacity(&self) -> usize

pub fn len(&self) -> usize

Returns the number of elements in the sequence, also referred to as its ‘length’.

pub fn with_capacity(capacity: usize) -> Seq<T>

Constructs a new, empty Seq<T> with the specified capacity.

pub fn push<F: FnOnce() -> T + 'static>(&mut self, value: F)

Appends the provided function to the back of the collection.

pub fn pop(&mut self) -> Option<T>

Forces evaluation of the last function in the sequence, returning the result.

pub fn force_all(&mut self)

Evaluates all unevaluated functions within the Seq.

pub fn to_vec(self) -> Vec<T>

Converts a Seq<T> to a Vec<T> by forcing evaluation of all functions.

pub fn to_lazy_vec(self) -> Vec<Lazy<T>>

Converts a Seq<T> to a Vec<Lazy<T>> without evaluating any additional functions.

pub fn get(&mut self, index: usize) -> Option<&T>

Gets an immutable reference to the value at the specified index.

pub fn get_mut(&mut self, index: usize) -> Option<&mut T>

Gets a mutable reference to the value at the specified index.

Trait Implementations

impl<T> Default for Seq<T>

fn default() -> Self

Returns the “default value” for a type.

impl<T> From<Vec<Box<dyn FnOnce() -> T>>> for Seq<T>

fn from(vec: Vec<Box<dyn FnOnce() -> T>>) -> Self

Converts to this type from the input type.

impl<T> From<Vec<T>> for Seq<T>

fn from(vec: Vec<T>) -> Self

Converts to this type from the input type.