Struct HList 

pub struct HList(pub Vec<Kind>);

Haystack List — a thin wrapper around Vec<Kind>.

Used for tag values that are lists of Haystack values.

Tuple Fields

0: Vec<Kind>

Implementations

impl HList

pub fn new() -> Self

Create an empty list.

pub fn from_vec(v: Vec<Kind>) -> Self

Create a list from a pre-built Vec.

pub fn len(&self) -> usize

Returns the number of elements.

pub fn is_empty(&self) -> bool

Returns true if the list is empty.

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

Returns a reference to the element at index, if in bounds.

pub fn push(&mut self, val: Kind)

Append a value to the end of the list.

pub fn iter(&self) -> impl Iterator<Item = &Kind>

Iterate over the values.

Trait Implementations

impl Clone for HList

fn clone(&self) -> HList

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HList

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

Formats the value using the given formatter.

impl Default for HList

fn default() -> HList

Returns the “default value” for a type.

impl Display for HList

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

Formats the value using the given formatter.

impl PartialEq for HList

fn eq(&self, other: &HList) -> 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 StructuralPartialEq for HList