Struct ArityRange 

pub struct ArityRange {
    pub min: u64,
    pub max: Option<u64>,
}

How many references the links of a section hold: min..=max, where max = None means no upper bound.

Fields

min: u64

Fewest references in a link, at least 1.

max: Option<u64>

Most references in a link, None for no limit.

Implementations

impl ArityRange

pub const DOUBLETS: ArityRange

Links of exactly two references.

pub const fn exactly(arity: u64) -> Self

Links of exactly arity references.

pub const fn at_least(min: u64) -> Self

Links of at least min references.

pub const fn between(min: u64, max: u64) -> Self

Links of min..=max references.

pub fn contains(&self, length: u64) -> bool

True when a link of length references fits the range.

pub fn is_fixed(&self) -> bool

True when every link has the same number of references, so links need no length prefix.

Trait Implementations

impl Clone for ArityRange

fn clone(&self) -> ArityRange

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ArityRange

impl Debug for ArityRange

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

Formats the value using the given formatter.

impl Default for ArityRange

fn default() -> Self

Returns the “default value” for a type.

impl Display for ArityRange

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

Formats the value using the given formatter.

impl Eq for ArityRange

impl FromStr for ArityRange

fn from_str(text: &str) -> Result<Self, Self::Err>

Parses n, min..max (inclusive) or min.. (no maximum).

type Err = String

The associated error which can be returned from parsing.

impl Hash for ArityRange

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ArityRange

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ArityRange