typescript-collections
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A complete, fully tested data structure library written in TypeScript.
100 lines (99 loc) • 3.65 kB
TypeScript
import * as util from './util';
import Dictionary from './Dictionary';
export default class Set<T> {
/**
* Dictionary key and value holds the elements in the set.
* @type {Object}
* @protected
*/
protected dictionary: Dictionary<T, any>;
/**
* Creates an empty set.
* @class <p>A set is a data structure that contains no duplicate items.</p>
* <p>If the inserted elements are custom objects a function
* which converts elements to strings must be provided. Example:</p>
*
* <pre>
* function petToString(pet) {
* return pet.name;
* }
* </pre>
*
* @constructor
* @param {function(Object):string=} toStringFunction optional function used
* to convert elements to strings. If the elements aren't strings or if toString()
* is not appropriate, a custom function which receives an object and returns a
* unique string must be provided.
*/
constructor(toStringFunction?: (item: T) => string);
/**
* Returns true if this set contains the specified element.
* @param {Object} element element to search for.
* @return {boolean} true if this set contains the specified element,
* false otherwise.
*/
contains(element: T): boolean;
/**
* Adds the specified element to this set if it is not already present.
* @param {Object} element the element to insert.
* @return {boolean} true if this set did not already contain the specified element.
*/
add(element: T): boolean;
/**
* Performs an intersection between this and another set.
* Removes all values that are not present this set and the given set.
* @param {collections.Set} otherSet other set.
*/
intersection(otherSet: Set<T>): void;
/**
* Performs a union between this and another set.
* Adds all values from the given set to this set.
* @param {collections.Set} otherSet other set.
*/
union(otherSet: Set<T>): void;
/**
* Performs a difference between this and another set.
* Removes from this set all the values that are present in the given set.
* @param {collections.Set} otherSet other set.
*/
difference(otherSet: Set<T>): void;
/**
* Checks whether the given set contains all the elements in this set.
* @param {collections.Set} otherSet other set.
* @return {boolean} true if this set is a subset of the given set.
*/
isSubsetOf(otherSet: Set<T>): boolean;
/**
* Removes the specified element from this set if it is present.
* @return {boolean} true if this set contained the specified element.
*/
remove(element: T): boolean;
/**
* Executes the provided function once for each element
* present in this set.
* @param {function(Object):*} callback function to execute, it is
* invoked with one arguments: the element. To break the iteration you can
* optionally return false.
*/
forEach(callback: util.ILoopFunction<T>): void;
/**
* Returns an array containing all of the elements in this set in arbitrary order.
* @return {Array} an array containing all of the elements in this set.
*/
toArray(): T[];
/**
* Returns true if this set contains no elements.
* @return {boolean} true if this set contains no elements.
*/
isEmpty(): boolean;
/**
* Returns the number of elements in this set.
* @return {number} the number of elements in this set.
*/
size(): number;
/**
* Removes all of the elements from this set.
*/
clear(): void;
toString(): string;
}