Struct upwd_lib::Pool

pub struct Pool(_);

Collection of unique chars. This is wrapper for IndexSet<char>

Implementations

impl Pool

pub fn new() -> Self

Create new empty pool

pub fn len(&self) -> usize

Return number of chars in the pool

Examples

let pool: Pool = "0123456789".parse().unwrap();

assert_eq!(pool.len(), 10)

pub fn extend_from_string(&mut self, s: &str) -> &mut Self

Extracts all chars from string and adds them to the pool

pub fn is_empty(&self) -> bool

Returns true if pool contains no elements

Examples

let pool = Pool::new();

assert!(pool.is_empty())

pub fn contains(&self, ch: char) -> bool

Check if char exists in the pool

Examples

let pool: Pool = "ABCDEFG".parse().unwrap();

assert!(pool.contains('D'))

pub fn contains_all(&self, elements: &str) -> bool

Returns true if pool contains each char from the string elements

Examples

let pool: Pool = "ABCDEFG".parse().unwrap();

assert!(pool.contains_all("DAG"))

pub fn iter(&self) -> Iter<'_, char>

Returns iterator

pub fn swap_remove(&mut self, ch: &char) -> bool

Remove char from pool. Like a Vec::swap_remove

pub fn shift_remove(&mut self, ch: &char) -> bool

Remove char from pool. Like a Vec::remove

pub fn remove_all(&mut self, elements: &str)

Remove all chars of the string elements from pool

pub fn sort(&mut self)

Sorts the chars in the pool

Examples

let mut pool = Pool::from_str("31524").unwrap();
pool.sort();

assert_eq!(pool, Pool::from_str("12345").unwrap())

Methods from Deref<Target = IndexSet<char>>

pub fn capacity(&self) -> usize

Computes in O(1) time.

pub fn hasher(&self) -> &S

Return a reference to the set’s BuildHasher.

pub fn len(&self) -> usize

Return the number of elements in the set.

Computes in O(1) time.

pub fn is_empty(&self) -> bool

Returns true if the set contains no elements.

Computes in O(1) time.

pub fn iter(&self) -> Iter<'_, T>

Return an iterator over the values of the set, in their order

pub fn clear(&mut self)

Remove all elements in the set, while preserving its capacity.

Computes in O(n) time.

pub fn truncate(&mut self, len: usize)

Shortens the set, keeping the first len elements and dropping the rest.

If len is greater than the set’s current length, this has no effect.

pub fn drain<R>(&mut self, range: R) -> Drain<'_, T> where
    R: RangeBounds<usize>, 

Clears the IndexSet in the given index range, returning those values as a drain iterator.

The range may be any type that implements RangeBounds<usize>, including all of the std::ops::Range* types, or even a tuple pair of Bound start and end values. To drain the set entirely, use RangeFull like set.drain(..).

This shifts down all entries following the drained range to fill the gap, and keeps the allocated memory for reuse.

Panics if the starting point is greater than the end point or if the end point is greater than the length of the set.

pub fn split_off(&mut self, at: usize) -> IndexSet<T, S> where
    S: Clone, 

Splits the collection into two at the given index.

Returns a newly allocated set containing the elements in the range [at, len). After the call, the original set will be left containing the elements [0, at) with its previous capacity unchanged.

Panics if at > len.

pub fn reserve(&mut self, additional: usize)

Reserve capacity for additional more values.

Computes in O(n) time.

pub fn shrink_to_fit(&mut self)

Shrink the capacity of the set as much as possible.

Computes in O(n) time.

pub fn insert(&mut self, value: T) -> bool

Insert the value into the set.

If an equivalent item already exists in the set, it returns false leaving the original value in the set and without altering its insertion order. Otherwise, it inserts the new item and returns true.

Computes in O(1) time (amortized average).

pub fn insert_full(&mut self, value: T) -> (usize, bool)

Insert the value into the set, and get its index.

If an equivalent item already exists in the set, it returns the index of the existing item and false, leaving the original value in the set and without altering its insertion order. Otherwise, it inserts the new item and returns the index of the inserted item and true.

Computes in O(1) time (amortized average).

pub fn difference<S2>(
    &'a self,
    other: &'a IndexSet<T, S2>
) -> Difference<'a, T, S2> where
    S2: BuildHasher, 

Return an iterator over the values that are in self but not other.

Values are produced in the same order that they appear in self.

pub fn symmetric_difference<S2>(
    &'a self,
    other: &'a IndexSet<T, S2>
) -> SymmetricDifference<'a, T, S, S2> where
    S2: BuildHasher, 

Return an iterator over the values that are in self or other, but not in both.

Values from self are produced in their original order, followed by values from other in their original order.

pub fn intersection<S2>(
    &'a self,
    other: &'a IndexSet<T, S2>
) -> Intersection<'a, T, S2> where
    S2: BuildHasher, 

Return an iterator over the values that are in both self and other.

Values are produced in the same order that they appear in self.

pub fn union<S2>(&'a self, other: &'a IndexSet<T, S2>) -> Union<'a, T, S> where
    S2: BuildHasher, 

Return an iterator over all values that are in self or other.

Values from self are produced in their original order, followed by values that are unique to other in their original order.

pub fn contains<Q>(&self, value: &Q) -> bool where
    Q: Hash + Equivalent<T> + ?Sized, 

Return true if an equivalent to value exists in the set.

Computes in O(1) time (average).

pub fn get<Q>(&self, value: &Q) -> Option<&T> where
    Q: Hash + Equivalent<T> + ?Sized, 

Return a reference to the value stored in the set, if it is present, else None.

Computes in O(1) time (average).

pub fn get_full<Q>(&self, value: &Q) -> Option<(usize, &T)> where
    Q: Hash + Equivalent<T> + ?Sized, 

Return item index and value

pub fn get_index_of<Q>(&self, value: &Q) -> Option<usize> where
    Q: Hash + Equivalent<T> + ?Sized, 

Return item index, if it exists in the set

pub fn replace(&mut self, value: T) -> Option<T>

Adds a value to the set, replacing the existing value, if any, that is equal to the given one. Returns the replaced value.

Computes in O(1) time (average).

pub fn remove<Q>(&mut self, value: &Q) -> bool where
    Q: Hash + Equivalent<T> + ?Sized, 

Remove the value from the set, and return true if it was present.

NOTE: This is equivalent to .swap_remove(value), if you want to preserve the order of the values in the set, use .shift_remove(value).

Computes in O(1) time (average).

pub fn swap_remove<Q>(&mut self, value: &Q) -> bool where
    Q: Hash + Equivalent<T> + ?Sized, 

Remove the value from the set, and return true if it was present.

Like Vec::swap_remove, the value is removed by swapping it with the last element of the set and popping it off. This perturbs the position of what used to be the last element!

Return false if value was not in the set.

Computes in O(1) time (average).

pub fn shift_remove<Q>(&mut self, value: &Q) -> bool where
    Q: Hash + Equivalent<T> + ?Sized, 

Remove the value from the set, and return true if it was present.

Like Vec::remove, the value is removed by shifting all of the elements that follow it, preserving their relative order. This perturbs the index of all of those elements!

Return false if value was not in the set.

Computes in O(n) time (average).

pub fn take<Q>(&mut self, value: &Q) -> Option<T> where
    Q: Hash + Equivalent<T> + ?Sized, 

Removes and returns the value in the set, if any, that is equal to the given one.

NOTE: This is equivalent to .swap_take(value), if you need to preserve the order of the values in the set, use .shift_take(value) instead.

Computes in O(1) time (average).

pub fn swap_take<Q>(&mut self, value: &Q) -> Option<T> where
    Q: Hash + Equivalent<T> + ?Sized, 

Removes and returns the value in the set, if any, that is equal to the given one.

Like Vec::swap_remove, the value is removed by swapping it with the last element of the set and popping it off. This perturbs the position of what used to be the last element!

Return None if value was not in the set.

Computes in O(1) time (average).

pub fn shift_take<Q>(&mut self, value: &Q) -> Option<T> where
    Q: Hash + Equivalent<T> + ?Sized, 

Removes and returns the value in the set, if any, that is equal to the given one.

Like Vec::remove, the value is removed by shifting all of the elements that follow it, preserving their relative order. This perturbs the index of all of those elements!

Return None if value was not in the set.

Computes in O(n) time (average).

pub fn swap_remove_full<Q>(&mut self, value: &Q) -> Option<(usize, T)> where
    Q: Hash + Equivalent<T> + ?Sized, 

Remove the value from the set return it and the index it had.

Like Vec::swap_remove, the value is removed by swapping it with the last element of the set and popping it off. This perturbs the position of what used to be the last element!

Return None if value was not in the set.

pub fn shift_remove_full<Q>(&mut self, value: &Q) -> Option<(usize, T)> where
    Q: Hash + Equivalent<T> + ?Sized, 

Remove the value from the set return it and the index it had.

Like Vec::remove, the value is removed by shifting all of the elements that follow it, preserving their relative order. This perturbs the index of all of those elements!

Return None if value was not in the set.

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

Remove the last value

Computes in O(1) time (average).

pub fn retain<F>(&mut self, keep: F) where
    F: FnMut(&T) -> bool, 

Scan through each value in the set and keep those where the closure keep returns true.

The elements are visited in order, and remaining elements keep their order.

Computes in O(n) time (average).

pub fn sort(&mut self) where
    T: Ord, 

Sort the set’s values by their default ordering.

See sort_by for details.

pub fn sort_by<F>(&mut self, compare: F) where
    F: FnMut(&T, &T) -> Ordering, 

Sort the set’s values in place using the comparison function compare.

Computes in O(n log n) time and O(n) space. The sort is stable.

pub fn reverse(&mut self)

Reverses the order of the set’s values in place.

Computes in O(n) time and O(1) space.

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

Get a value by index

Valid indices are 0 <= index < self.len()

Computes in O(1) time.

pub fn first(&self) -> Option<&T>

Get the first value

Computes in O(1) time.

pub fn last(&self) -> Option<&T>

Get the last value

Computes in O(1) time.

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

Remove the value by index

Valid indices are 0 <= index < self.len()

Like Vec::swap_remove, the value is removed by swapping it with the last element of the set and popping it off. This perturbs the position of what used to be the last element!

Computes in O(1) time (average).

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

Remove the value by index

Valid indices are 0 <= index < self.len()

Like Vec::remove, the value is removed by shifting all of the elements that follow it, preserving their relative order. This perturbs the index of all of those elements!

Computes in O(n) time (average).

pub fn swap_indices(&mut self, a: usize, b: usize)

Swaps the position of two values in the set.

Panics if a or b are out of bounds.

pub fn is_disjoint<S2>(&self, other: &IndexSet<T, S2>) -> bool where
    S2: BuildHasher, 

Returns true if self has no elements in common with other.

pub fn is_subset<S2>(&self, other: &IndexSet<T, S2>) -> bool where
    S2: BuildHasher, 

Returns true if all elements of self are contained in other.

pub fn is_superset<S2>(&self, other: &IndexSet<T, S2>) -> bool where
    S2: BuildHasher, 

Returns true if all elements of other are contained in self.

Trait Implementations

impl Clone for Pool

fn clone(&self) -> Pool

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Pool

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

Formats the value using the given formatter.

impl Deref for Pool

type Target = IndexSet<char>

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl DerefMut for Pool

fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.

impl Display for Pool

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

Formats the value using the given formatter.

impl Extend<char> for Pool

fn extend<T: IntoIterator<Item = char>>(&mut self, iter: T)

Extends a collection with the contents of an iterator.

fn extend_one(&mut self, item: A)

🔬 This is a nightly-only experimental API. (extend_one)

Extends a collection with exactly one element.

fn extend_reserve(&mut self, additional: usize)

🔬 This is a nightly-only experimental API. (extend_one)

Reserves capacity in a collection for the given number of additional elements.

impl FromIterator<char> for Pool

fn from_iter<I: IntoIterator<Item = char>>(iter: I) -> Self

Creates a value from an iterator.

impl FromStr for Pool

type Err = ParseCharError

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 PartialEq<Pool> for Pool

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl Eq for Pool

impl StructuralEq for Pool

impl StructuralPartialEq for Pool