pub struct Counter<T: Ord + PartialEq + Clone> {
    map: BTreeMap<T, usize>,
    sum: usize,
}
Expand description

A counter per key

Fields§

§map: BTreeMap<T, usize>§sum: usize

Implementations§

source§

impl<T: Ord + PartialEq + Clone> Counter<T>

source

pub fn new() -> Counter<T>

source

pub fn add(&mut self, val: T, amount: usize) -> usize

source

pub fn inc(&mut self, val: T) -> usize

source

pub fn get(&self, val: T) -> usize

If the key is missing, returns 0

source

pub fn sorted_asc(&self) -> Vec<Vec<T>>

Values with the same count are grouped together

source

pub fn highest_n(&self, n: usize) -> Vec<(T, usize)>

source

pub fn max_key(&self) -> T

If two keys share the maximum, returns one of them arbitrarily (and deterministically)

source

pub fn max(&self) -> usize

source

pub fn sum(&self) -> usize

source

pub fn compare(self, other: Counter<T>) -> Vec<(T, usize, usize)>

source

pub fn borrow(&self) -> &BTreeMap<T, usize>

source

pub fn consume(self) -> BTreeMap<T, usize>

source

pub fn is_empty(&self) -> bool

source

pub fn extend(&mut self, other: Counter<T>)

source

pub fn subset(&mut self, keys: &BTreeSet<T>)

Remove all entries that aren’t in the specified set of keys

Trait Implementations§

source§

impl<T: Clone + Ord + PartialEq + Clone> Clone for Counter<T>

source§

fn clone(&self) -> Counter<T>

Returns a copy of the value. Read more
1.0.0 · source§

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

Performs copy-assignment from source. Read more
source§

impl<T: Ord + PartialEq + Clone> Default for Counter<T>

source§

fn default() -> Counter<T>

Returns the “default value” for a type. Read more
source§

impl<'de, T> Deserialize<'de> for Counter<T>where T: Deserialize<'de> + Ord + PartialEq + Clone,

source§

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
source§

impl<T: PartialEq + Ord + PartialEq + Clone> PartialEq for Counter<T>

source§

fn eq(&self, other: &Counter<T>) -> bool

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

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
source§

impl<T> Serialize for Counter<T>where T: Serialize + Ord + PartialEq + Clone,

source§

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>where __S: Serializer,

Serialize this value into the given Serde serializer. Read more
source§

impl<T: Ord + PartialEq + Clone> StructuralPartialEq for Counter<T>

Auto Trait Implementations§

§

impl<T> RefUnwindSafe for Counter<T>where T: RefUnwindSafe,

§

impl<T> Send for Counter<T>where T: Send,

§

impl<T> Sync for Counter<T>where T: Sync,

§

impl<T> Unpin for Counter<T>

§

impl<T> UnwindSafe for Counter<T>where T: RefUnwindSafe,

Blanket Implementations§

source§

impl<T> Any for Twhere T: 'static + ?Sized,

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

impl<T> Borrow<T> for Twhere T: ?Sized,

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

impl<T> BorrowMut<T> for Twhere T: ?Sized,

source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

impl<T, U> Into<U> for Twhere U: From<T>,

source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

source§

impl<T> ToOwned for Twhere T: Clone,

§

type Owned = T

The resulting type after obtaining ownership.
source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
source§

impl<T, U> TryFrom<U> for Twhere U: Into<T>,

§

type Error = Infallible

The type returned in the event of a conversion error.
source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
source§

impl<T> DeserializeOwned for Twhere T: for<'de> Deserialize<'de>,