Struct IndexBounds 

pub struct IndexBounds {
    pub start: Option<usize>,
    pub end: Option<usize>,
}

Defines which number of arguments is valid.

Convertible from an exact value a as well as inclusive range expressions a.., ..=b, a..=b.

Fields

start: Option<usize>

The lower (inclusive) bound of the expected number of arguments, or None if unbounded.

end: Option<usize>

The upper (inclusive) bound of the expected number of arguments, or None if unbounded.

Implementations

impl IndexBounds

pub fn contains(&self, value: usize) -> bool

Trait Implementations

impl Debug for IndexBounds

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

Formats the value using the given formatter.

impl Display for IndexBounds

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

Formats the value using the given formatter.

impl From<RangeFrom<usize>> for IndexBounds

a..

fn from(range: RangeFrom<usize>) -> Self

Converts to this type from the input type.

impl From<RangeInclusive<usize>> for IndexBounds

a..=b

fn from(range: RangeInclusive<usize>) -> Self

Converts to this type from the input type.

impl From<RangeToInclusive<usize>> for IndexBounds

..=b

fn from(range: RangeToInclusive<usize>) -> Self

Converts to this type from the input type.

impl From<usize> for IndexBounds

a

fn from(exact_value: usize) -> Self

Converts to this type from the input type.