Struct RangedUsize

pub struct RangedUsize<const MIN: usize, const MAX: usize>(/* private fields */);

A usize that is known to be in the range MIN..=MAX.

Implementations

impl<const MIN: usize, const MAX: usize> RangedUsize<MIN, MAX>

pub const unsafe fn new_unchecked(value: usize) -> Self

Creates a ranged integer without checking the value.

Safety

The value must be within the range MIN..=MAX.

pub const fn new(value: usize) -> Option<Self>

Creates a ranged integer if the given value is in the range MIN..=MAX.

pub const fn get(self) -> usize

Returns the value as a primitive type.

impl<const MIN: usize, const MAX: usize> RangedUsize<MIN, MAX>

pub const MIN: Self = _

The smallest value that can be represented by this type.

pub const MAX: Self = _

The largest value that can be represented by this type.

pub const fn expand<const NEW_MIN: usize, const NEW_MAX: usize>( self, ) -> RangedUsize<NEW_MIN, NEW_MAX>

Expand the range that the value may be in. Fails to compile if the new range is not a superset of the current range.

pub const fn narrow<const NEW_MIN: usize, const NEW_MAX: usize>( self, ) -> Option<RangedUsize<NEW_MIN, NEW_MAX>>

Attempt to narrow the range that the value may be in. Returns None if the value is outside the new range. Fails to compile if the new range is not a subset of the current range.

pub const fn new_static<const VALUE: usize>() -> Self

Creates a ranged integer with a statically known value. Fails to compile if the value is not in range.

pub fn from_str_radix(src: &str, radix: u32) -> Result<Self, ParseIntError>

Converts a string slice in a given base to an integer.

The string is expected to be an optional + or - sign followed by digits. Leading and trailing whitespace represent an error. Digits are a subset of these characters, depending on radix:

• 0-9
• a-z
• A-Z

Panics

Panics if radix is not in the range 2..=36.

Examples

Basic usage:

assert_eq!(RangedUsize::<5, 10>::from_str_radix("A", 16), Ok(RangedUsize::new_static::<10>()));

pub const fn checked_add(self, rhs: usize) -> Option<Self>

Checked integer addition. Computes self + rhs, returning None if the resulting value is out of range.

pub const unsafe fn unchecked_add(self, rhs: usize) -> Self

Unchecked integer addition. Computes self + rhs, assuming that the result is in range.

Safety

The result of self + rhs must be in the range MIN..=MAX.

pub const fn checked_sub(self, rhs: usize) -> Option<Self>

Checked integer addition. Computes self - rhs, returning None if the resulting value is out of range.

pub const unsafe fn unchecked_sub(self, rhs: usize) -> Self

Unchecked integer subtraction. Computes self - rhs, assuming that the result is in range.

Safety

The result of self - rhs must be in the range MIN..=MAX.

pub const fn checked_mul(self, rhs: usize) -> Option<Self>

Checked integer addition. Computes self * rhs, returning None if the resulting value is out of range.

pub const unsafe fn unchecked_mul(self, rhs: usize) -> Self

Unchecked integer multiplication. Computes self * rhs, assuming that the result is in range.

Safety

The result of self * rhs must be in the range MIN..=MAX.

pub const fn checked_div(self, rhs: usize) -> Option<Self>

Checked integer addition. Computes self / rhs, returning None if rhs == 0 or if the resulting value is out of range.

pub const unsafe fn unchecked_div(self, rhs: usize) -> Self

Unchecked integer division. Computes self / rhs, assuming that rhs != 0 and that the result is in range.

Safety

self must not be zero and the result of self / rhs must be in the range MIN..=MAX.

pub const fn checked_div_euclid(self, rhs: usize) -> Option<Self>

Checked Euclidean division. Computes self.div_euclid(rhs), returning None if rhs == 0 or if the resulting value is out of range.

pub const unsafe fn unchecked_div_euclid(self, rhs: usize) -> Self

Unchecked Euclidean division. Computes self.div_euclid(rhs), assuming that rhs != 0 and that the result is in range.

Safety

self must not be zero and the result of self.div_euclid(rhs) must be in the range MIN..=MAX.

pub const fn checked_rem(self, rhs: usize) -> Option<Self>

Checked integer remainder. Computes self % rhs, returning None if rhs == 0 or if the resulting value is out of range.

pub const unsafe fn unchecked_rem(self, rhs: usize) -> Self

Unchecked remainder. Computes self % rhs, assuming that rhs != 0 and that the result is in range.

Safety

self must not be zero and the result of self % rhs must be in the range MIN..=MAX.

pub const fn checked_rem_euclid(self, rhs: usize) -> Option<Self>

Checked Euclidean remainder. Computes self.rem_euclid(rhs), returning None if rhs == 0 or if the resulting value is out of range.

pub const unsafe fn unchecked_rem_euclid(self, rhs: usize) -> Self

Unchecked Euclidean remainder. Computes self.rem_euclid(rhs), assuming that rhs != 0 and that the result is in range.

Safety

self must not be zero and the result of self.rem_euclid(rhs) must be in the range MIN..=MAX.

pub const fn checked_neg(self) -> Option<Self>

Checked negation. Computes -self, returning None if the resulting value is out of range.

pub const unsafe fn unchecked_neg(self) -> Self

Unchecked negation. Computes -self, assuming that -self is in range.

Safety

The result of -self must be in the range MIN..=MAX.

pub const fn neg(self) -> Self

Absolute value. Computes self.neg(), failing to compile if the result is not guaranteed to be in range.

pub const fn checked_shl(self, rhs: u32) -> Option<Self>

Checked shift left. Computes self << rhs, returning None if the resulting value is out of range.

pub const unsafe fn unchecked_shl(self, rhs: u32) -> Self

Unchecked shift left. Computes self << rhs, assuming that the result is in range.

Safety

The result of self << rhs must be in the range MIN..=MAX.

pub const fn checked_shr(self, rhs: u32) -> Option<Self>

Checked shift right. Computes self >> rhs, returning None if the resulting value is out of range.

pub const unsafe fn unchecked_shr(self, rhs: u32) -> Self

Unchecked shift right. Computes self >> rhs, assuming that the result is in range.

Safety

The result of self >> rhs must be in the range MIN..=MAX.

pub const fn checked_pow(self, exp: u32) -> Option<Self>

Checked exponentiation. Computes self.pow(exp), returning None if the resulting value is out of range.

pub const unsafe fn unchecked_pow(self, exp: u32) -> Self

Unchecked exponentiation. Computes self.pow(exp), assuming that the result is in range.

Safety

The result of self.pow(exp) must be in the range MIN..=MAX.

pub const fn saturating_add(self, rhs: usize) -> Self

Saturating integer addition. Computes self + rhs, saturating at the numeric bounds.

pub const fn saturating_sub(self, rhs: usize) -> Self

Saturating integer subtraction. Computes self - rhs, saturating at the numeric bounds.

pub const fn saturating_mul(self, rhs: usize) -> Self

Saturating integer multiplication. Computes self * rhs, saturating at the numeric bounds.

pub const fn saturating_pow(self, exp: u32) -> Self

Saturating integer exponentiation. Computes self.pow(exp), saturating at the numeric bounds.

Trait Implementations

impl<const MIN: usize, const MAX: usize> AsRef<usize> for RangedUsize<MIN, MAX>

fn as_ref(&self) -> &usize

Converts this type into a shared reference of the (usually inferred) input type.

impl<const MIN: usize, const MAX: usize> Binary for RangedUsize<MIN, MAX>

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

Formats the value using the given formatter.

impl<const MIN: usize, const MAX: usize> Borrow<usize> for RangedUsize<MIN, MAX>

fn borrow(&self) -> &usize

Immutably borrows from an owned value.

impl<const MIN: usize, const MAX: usize> Clone for RangedUsize<MIN, MAX>

fn clone(&self) -> RangedUsize<MIN, MAX>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<const MIN: usize, const MAX: usize> Debug for RangedUsize<MIN, MAX>

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

Formats the value using the given formatter.

impl<const MIN: usize, const MAX: usize> Display for RangedUsize<MIN, MAX>

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

Formats the value using the given formatter.

impl<const MIN: usize, const MAX: usize> From<RangedUsize<MIN, MAX>> for OptionRangedUsize<MIN, MAX>

fn from(value: RangedUsize<MIN, MAX>) -> Self

Converts to this type from the input type.

impl<const MIN: usize, const MAX: usize> From<RangedUsize<MIN, MAX>> for usize

fn from(value: RangedUsize<MIN, MAX>) -> Self

Converts to this type from the input type.

impl<const MIN: usize, const MAX: usize> FromStr for RangedUsize<MIN, MAX>

type Err = ParseIntError

The associated error which can be returned from parsing.

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

Parses a string s to return a value of this type.

impl<const MIN: usize, const MAX: usize> Hash for RangedUsize<MIN, MAX>

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<const MIN: usize, const MAX: usize> LowerExp for RangedUsize<MIN, MAX>

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

Formats the value using the given formatter.

impl<const MIN: usize, const MAX: usize> LowerHex for RangedUsize<MIN, MAX>

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

Formats the value using the given formatter.

impl<const MIN: usize, const MAX: usize> Octal for RangedUsize<MIN, MAX>

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

Formats the value using the given formatter.

impl<const MIN: usize, const MAX: usize> Ord for RangedUsize<MIN, MAX>

fn cmp(&self, other: &RangedUsize<MIN, MAX>) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl<const MIN_A: usize, const MAX_A: usize, const MIN_B: usize, const MAX_B: usize> PartialEq<RangedUsize<MIN_B, MAX_B>> for RangedUsize<MIN_A, MAX_A>

fn eq(&self, other: &RangedUsize<MIN_B, MAX_B>) -> 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<const MIN_A: usize, const MAX_A: usize, const MIN_B: usize, const MAX_B: usize> PartialOrd<RangedUsize<MIN_B, MAX_B>> for RangedUsize<MIN_A, MAX_A>

fn partial_cmp(&self, other: &RangedUsize<MIN_B, MAX_B>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl<const MIN: usize, const MAX: usize> TryFrom<usize> for RangedUsize<MIN, MAX>

type Error = TryFromIntError

The type returned in the event of a conversion error.

fn try_from(value: usize) -> Result<Self, Self::Error>

Performs the conversion.

impl<const MIN: usize, const MAX: usize> UpperExp for RangedUsize<MIN, MAX>

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

Formats the value using the given formatter.

impl<const MIN: usize, const MAX: usize> UpperHex for RangedUsize<MIN, MAX>

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

Formats the value using the given formatter.

impl<const MIN: usize, const MAX: usize> Copy for RangedUsize<MIN, MAX>

impl<const MIN: usize, const MAX: usize> Eq for RangedUsize<MIN, MAX>