/// /// declare module goog.iter { class Iterator extends Iterator__Class { } /** Fake class which should be extended to avoid inheriting static properties */ class Iterator__Class { /** * Class/interface for iterators. An iterator needs to implement a {@code next} * method and it needs to throw a {@code goog.iter.StopIteration} when the * iteration passes beyond the end. Iterators have no {@code hasNext} method. * It is recommended to always use the helper functions to iterate over the * iterator or in case you are only targeting JavaScript 1.7 for in loops. * @constructor * @template VALUE */ constructor(); /** * Returns the next value of the iteration. This will throw the object * {@see goog.iter#StopIteration} when the iteration passes the end. * @return {VALUE} Any object or value. */ next(): VALUE; /** * Returns the {@code Iterator} object itself. This is used to implement * the iterator protocol in JavaScript 1.7 * @param {boolean=} opt_keys Whether to return the keys or values. Default is * to only return the values. This is being used by the for-in loop (true) * and the for-each-in loop (false). Even though the param gives a hint * about what the iterator will return there is no guarantee that it will * return the keys when true is passed. * @return {!goog.iter.Iterator.} The object itself. */ __iterator__(opt_keys?: boolean): goog.iter.Iterator; } class GroupByIterator_ extends GroupByIterator___Class { } /** Fake class which should be extended to avoid inheriting static properties */ class GroupByIterator___Class extends goog.iter.Iterator__Class { /** * Implements the {@code goog.iter.groupBy} iterator. * @param {!goog.iter.Iterator.|!goog.iter.Iterable} iterable The * iterable to group. * @param {function(...[VALUE]): KEY=} opt_keyFunc Optional function for * determining the key value for each group in the {@code iterable}. Default * is the identity function. * @constructor * @extends {goog.iter.Iterator.} * @template KEY, VALUE * @private */ constructor(iterable: goog.iter.Iterator|goog.iter.Iterable, opt_keyFunc?: { (_0: VALUE[][]): KEY }); /** * The iterable to group, coerced to an iterator. * @type {!goog.iter.Iterator} */ iterator: goog.iter.Iterator; /** * A function for determining the key value for each element in the iterable. * If no function is provided, the identity function is used and returns the * element unchanged. * @type {function(...[VALUE]): KEY} */ keyFunc: { (_0: VALUE[][]): KEY }; /** * The target key for determining the start of a group. * @type {KEY} */ targetKey: KEY; /** * The current key visited during iteration. * @type {KEY} */ currentKey: KEY; /** * The current value being added to the group. * @type {VALUE} */ currentValue: VALUE; } /** * @typedef {goog.iter.Iterator|{length:number}|{__iterator__}} */ type Iterable = goog.iter.Iterator|{ length: number }|{ __iterator__: any /*missing*/ }; /** * Singleton Error object that is used to terminate iterations. * @type {Error} * @suppress {duplicate} */ var StopIteration: Error; /** * Returns an iterator that knows how to iterate over the values in the object. * @param {goog.iter.Iterator.|goog.iter.Iterable} iterable If the * object is an iterator it will be returned as is. If the object has an * {@code __iterator__} method that will be called to get the value * iterator. If the object is an array-like object we create an iterator * for that. * @return {!goog.iter.Iterator.} An iterator that knows how to iterate * over the values in {@code iterable}. * @template VALUE */ function toIterator(iterable: goog.iter.Iterator|goog.iter.Iterable): goog.iter.Iterator; /** * Calls a function for each element in the iterator with the element of the * iterator passed as argument. * * @param {goog.iter.Iterator.|goog.iter.Iterable} iterable The iterator * to iterate over. If the iterable is an object {@code toIterator} will be * called on it. * @param {function(this:THIS,VALUE,undefined,goog.iter.Iterator.)| * function(this:THIS,number,undefined,goog.iter.Iterator.)} f * The function to call for every element. This function takes 3 arguments * (the element, undefined, and the iterator) and the return value is * irrelevant. The reason for passing undefined as the second argument is * so that the same function can be used in {@see goog.array#forEach} as * well as others. * @param {THIS=} opt_obj The object to be used as the value of 'this' within * {@code f}. * @template THIS, VALUE */ function forEach(iterable: goog.iter.Iterator|goog.iter.Iterable, f: { (_0: VALUE, _1: any /*undefined*/, _2: goog.iter.Iterator): any /*missing*/ }|{ (_0: number, _1: any /*undefined*/, _2: goog.iter.Iterator): any /*missing*/ }, opt_obj?: THIS): void; /** * Calls a function for every element in the iterator, and if the function * returns true adds the element to a new iterator. * * @param {goog.iter.Iterator.|goog.iter.Iterable} iterable The iterator * to iterate over. * @param { * function(this:THIS,VALUE,undefined,goog.iter.Iterator.):boolean} f * The function to call for every element. This function takes 3 arguments * (the element, undefined, and the iterator) and should return a boolean. * If the return value is true the element will be included in the returned * iterator. If it is false the element is not included. * @param {THIS=} opt_obj The object to be used as the value of 'this' within * {@code f}. * @return {!goog.iter.Iterator.} A new iterator in which only elements * that passed the test are present. * @template THIS, VALUE */ function filter(iterable: goog.iter.Iterator|goog.iter.Iterable, f: { (_0: VALUE, _1: any /*undefined*/, _2: goog.iter.Iterator): boolean }, opt_obj?: THIS): goog.iter.Iterator; /** * Calls a function for every element in the iterator, and if the function * returns false adds the element to a new iterator. * * @param {goog.iter.Iterator.|goog.iter.Iterable} iterable The iterator * to iterate over. * @param { * function(this:THIS,VALUE,undefined,goog.iter.Iterator.):boolean} f * The function to call for every element. This function takes 3 arguments * (the element, undefined, and the iterator) and should return a boolean. * If the return value is false the element will be included in the returned * iterator. If it is true the element is not included. * @param {THIS=} opt_obj The object to be used as the value of 'this' within * {@code f}. * @return {!goog.iter.Iterator.} A new iterator in which only elements * that did not pass the test are present. * @template THIS, VALUE */ function filterFalse(iterable: goog.iter.Iterator|goog.iter.Iterable, f: { (_0: VALUE, _1: any /*undefined*/, _2: goog.iter.Iterator): boolean }, opt_obj?: THIS): goog.iter.Iterator; /** * Creates a new iterator that returns the values in a range. This function * can take 1, 2 or 3 arguments: * 
     * range(5) same as range(0, 5, 1)
     * range(2, 5) same as range(2, 5, 1)
     *
* * @param {number} startOrStop The stop value if only one argument is provided. * The start value if 2 or more arguments are provided. If only one * argument is used the start value is 0. * @param {number=} opt_stop The stop value. If left out then the first * argument is used as the stop value. * @param {number=} opt_step The number to increment with between each call to * next. This can be negative. * @return {!goog.iter.Iterator.} A new iterator that returns the values * in the range. */ function range(startOrStop: number, opt_stop?: number, opt_step?: number): goog.iter.Iterator; /** * Joins the values in a iterator with a delimiter. * @param {goog.iter.Iterator.|goog.iter.Iterable} iterable The iterator * to get the values from. * @param {string} deliminator The text to put between the values. * @return {string} The joined value string. * @template VALUE */ function join(iterable: goog.iter.Iterator|goog.iter.Iterable, deliminator: string): string; /** * For every element in the iterator call a function and return a new iterator * with that value. * * @param {!goog.iter.Iterator.|!goog.iter.Iterable} iterable The * iterator to iterate over. * @param { * function(this:THIS,VALUE,undefined,!goog.iter.Iterator.):RESULT} f * The function to call for every element. This function takes 3 arguments * (the element, undefined, and the iterator) and should return a new value. * @param {THIS=} opt_obj The object to be used as the value of 'this' within * {@code f}. * @return {!goog.iter.Iterator.} A new iterator that returns the * results of applying the function to each element in the original * iterator. * @template THIS, VALUE, RESULT */ function map(iterable: goog.iter.Iterator|goog.iter.Iterable, f: { (_0: VALUE, _1: any /*undefined*/, _2: goog.iter.Iterator): RESULT }, opt_obj?: THIS): goog.iter.Iterator; /** * Passes every element of an iterator into a function and accumulates the * result. * * @param {goog.iter.Iterator.|goog.iter.Iterable} iterable The iterator * to iterate over. * @param {function(this:THIS,VALUE,VALUE):VALUE} f The function to call for * every element. This function takes 2 arguments (the function's previous * result or the initial value, and the value of the current element). * function(previousValue, currentElement) : newValue. * @param {VALUE} val The initial value to pass into the function on the first * call. * @param {THIS=} opt_obj The object to be used as the value of 'this' within * f. * @return {VALUE} Result of evaluating f repeatedly across the values of * the iterator. * @template THIS, VALUE */ function reduce(iterable: goog.iter.Iterator|goog.iter.Iterable, f: { (_0: VALUE, _1: VALUE): VALUE }, val: VALUE, opt_obj?: THIS): VALUE; /** * Goes through the values in the iterator. Calls f for each of these, and if * any of them returns true, this returns true (without checking the rest). If * all return false this will return false. * * @param {goog.iter.Iterator.|goog.iter.Iterable} iterable The iterator * object. * @param { * function(this:THIS,VALUE,undefined,goog.iter.Iterator.):boolean} f * The function to call for every value. This function takes 3 arguments * (the value, undefined, and the iterator) and should return a boolean. * @param {THIS=} opt_obj The object to be used as the value of 'this' within * {@code f}. * @return {boolean} true if any value passes the test. * @template THIS, VALUE */ function some(iterable: goog.iter.Iterator|goog.iter.Iterable, f: { (_0: VALUE, _1: any /*undefined*/, _2: goog.iter.Iterator): boolean }, opt_obj?: THIS): boolean; /** * Goes through the values in the iterator. Calls f for each of these and if any * of them returns false this returns false (without checking the rest). If all * return true this will return true. * * @param {goog.iter.Iterator.|goog.iter.Iterable} iterable The iterator * object. * @param { * function(this:THIS,VALUE,undefined,goog.iter.Iterator.):boolean} f * The function to call for every value. This function takes 3 arguments * (the value, undefined, and the iterator) and should return a boolean. * @param {THIS=} opt_obj The object to be used as the value of 'this' within * {@code f}. * @return {boolean} true if every value passes the test. * @template THIS, VALUE */ function every(iterable: goog.iter.Iterator|goog.iter.Iterable, f: { (_0: VALUE, _1: any /*undefined*/, _2: goog.iter.Iterator): boolean }, opt_obj?: THIS): boolean; /** * Takes zero or more iterables and returns one iterator that will iterate over * them in the order chained. * @param {...!goog.iter.Iterator.|!goog.iter.Iterable} var_args Any * number of iterable objects. * @return {!goog.iter.Iterator.} Returns a new iterator that will * iterate over all the given iterables' contents. * @template VALUE */ function chain(...var_args: (goog.iter.Iterator|goog.iter.Iterable)[]): goog.iter.Iterator; /** * Takes a single iterable containing zero or more iterables and returns one * iterator that will iterate over each one in the order given. * @see http://docs.python.org/2/library/itertools.html#itertools.chain.from_iterable * @param {goog.iter.Iterable} iterable The iterable of iterables to chain. * @return {!goog.iter.Iterator.} Returns a new iterator that will * iterate over all the contents of the iterables contained within * {@code iterable}. * @template VALUE */ function chainFromIterable(iterable: goog.iter.Iterable): goog.iter.Iterator; /** * Builds a new iterator that iterates over the original, but skips elements as * long as a supplied function returns true. * @param {goog.iter.Iterator.|goog.iter.Iterable} iterable The iterator * object. * @param { * function(this:THIS,VALUE,undefined,goog.iter.Iterator.):boolean} f * The function to call for every value. This function takes 3 arguments * (the value, undefined, and the iterator) and should return a boolean. * @param {THIS=} opt_obj The object to be used as the value of 'this' within * {@code f}. * @return {!goog.iter.Iterator.} A new iterator that drops elements from * the original iterator as long as {@code f} is true. * @template THIS, VALUE */ function dropWhile(iterable: goog.iter.Iterator|goog.iter.Iterable, f: { (_0: VALUE, _1: any /*undefined*/, _2: goog.iter.Iterator): boolean }, opt_obj?: THIS): goog.iter.Iterator; /** * Builds a new iterator that iterates over the original, but only as long as a * supplied function returns true. * @param {goog.iter.Iterator.|goog.iter.Iterable} iterable The iterator * object. * @param { * function(this:THIS,VALUE,undefined,goog.iter.Iterator.):boolean} f * The function to call for every value. This function takes 3 arguments * (the value, undefined, and the iterator) and should return a boolean. * @param {THIS=} opt_obj This is used as the 'this' object in f when called. * @return {!goog.iter.Iterator.} A new iterator that keeps elements in * the original iterator as long as the function is true. * @template THIS, VALUE */ function takeWhile(iterable: goog.iter.Iterator|goog.iter.Iterable, f: { (_0: VALUE, _1: any /*undefined*/, _2: goog.iter.Iterator): boolean }, opt_obj?: THIS): goog.iter.Iterator; /** * Converts the iterator to an array * @param {goog.iter.Iterator.|goog.iter.Iterable} iterable The iterator * to convert to an array. * @return {!Array.} An array of the elements the iterator iterates over. * @template VALUE */ function toArray(iterable: goog.iter.Iterator|goog.iter.Iterable): VALUE[]; /** * Iterates over two iterables and returns true if they contain the same * sequence of elements and have the same length. * @param {!goog.iter.Iterator.|!goog.iter.Iterable} iterable1 The first * iterable object. * @param {!goog.iter.Iterator.|!goog.iter.Iterable} iterable2 The second * iterable object. * @return {boolean} true if the iterables contain the same sequence of elements * and have the same length. * @template VALUE */ function equals(iterable1: goog.iter.Iterator|goog.iter.Iterable, iterable2: goog.iter.Iterator|goog.iter.Iterable): boolean; /** * Advances the iterator to the next position, returning the given default value * instead of throwing an exception if the iterator has no more entries. * @param {goog.iter.Iterator.|goog.iter.Iterable} iterable The iterable * object. * @param {VALUE} defaultValue The value to return if the iterator is empty. * @return {VALUE} The next item in the iteration, or defaultValue if the * iterator was empty. * @template VALUE */ function nextOrValue(iterable: goog.iter.Iterator|goog.iter.Iterable, defaultValue: VALUE): VALUE; /** * Cartesian product of zero or more sets. Gives an iterator that gives every * combination of one element chosen from each set. For example, * ([1, 2], [3, 4]) gives ([1, 3], [1, 4], [2, 3], [2, 4]). * @see http://docs.python.org/library/itertools.html#itertools.product * @param {...!goog.array.ArrayLike} var_args Zero or more sets, as * arrays. * @return {!goog.iter.Iterator.>} An iterator that gives each * n-tuple (as an array). * @template VALUE */ function product(...var_args: goog.array.ArrayLike[]): goog.iter.Iterator; /** * Create an iterator to cycle over the iterable's elements indefinitely. * For example, ([1, 2, 3]) would return : 1, 2, 3, 1, 2, 3, ... * @see: http://docs.python.org/library/itertools.html#itertools.cycle. * @param {!goog.iter.Iterator.|!goog.iter.Iterable} iterable The * iterable object. * @return {!goog.iter.Iterator.} An iterator that iterates indefinitely * over the values in {@code iterable}. * @template VALUE */ function cycle(iterable: goog.iter.Iterator|goog.iter.Iterable): goog.iter.Iterator; /** * Creates an iterator that counts indefinitely from a starting value. * @see http://docs.python.org/2/library/itertools.html#itertools.count * @param {number=} opt_start The starting value. Default is 0. * @param {number=} opt_step The number to increment with between each call to * next. Negative and floating point numbers are allowed. Default is 1. * @return {!goog.iter.Iterator.} A new iterator that returns the values * in the series. */ function count(opt_start?: number, opt_step?: number): goog.iter.Iterator; /** * Creates an iterator that returns the same object or value repeatedly. * @param {VALUE} value Any object or value to repeat. * @return {!goog.iter.Iterator.} A new iterator that returns the * repeated value. * @template VALUE */ function repeat(value: VALUE): goog.iter.Iterator; /** * Creates an iterator that returns running totals from the numbers in * {@code iterable}. For example, the array {@code [1, 2, 3, 4, 5]} yields * {@code 1 -> 3 -> 6 -> 10 -> 15}. * @see http://docs.python.org/3.2/library/itertools.html#itertools.accumulate * @param {!goog.iter.Iterable} iterable The iterable of numbers to * accumulate. * @return {!goog.iter.Iterator.} A new iterator that returns the * numbers in the series. */ function accumulate(iterable: goog.iter.Iterable): goog.iter.Iterator; /** * Creates an iterator that returns arrays containing the ith elements from the * provided iterables. The returned arrays will be the same size as the number * of iterables given in {@code var_args}. Once the shortest iterable is * exhausted, subsequent calls to {@code next()} will throw * {@code goog.iter.StopIteration}. * @see http://docs.python.org/2/library/itertools.html#itertools.izip * @param {...!goog.iter.Iterator.|!goog.iter.Iterable} var_args Any * number of iterable objects. * @return {!goog.iter.Iterator.>} A new iterator that returns * arrays of elements from the provided iterables. * @template VALUE */ function zip(...var_args: (goog.iter.Iterator|goog.iter.Iterable)[]): goog.iter.Iterator; /** * Creates an iterator that returns arrays containing the ith elements from the * provided iterables. The returned arrays will be the same size as the number * of iterables given in {@code var_args}. Shorter iterables will be extended * with {@code fillValue}. Once the longest iterable is exhausted, subsequent * calls to {@code next()} will throw {@code goog.iter.StopIteration}. * @see http://docs.python.org/2/library/itertools.html#itertools.izip_longest * @param {VALUE} fillValue The object or value used to fill shorter iterables. * @param {...!goog.iter.Iterator.|!goog.iter.Iterable} var_args Any * number of iterable objects. * @return {!goog.iter.Iterator.>} A new iterator that returns * arrays of elements from the provided iterables. * @template VALUE */ function zipLongest(fillValue: VALUE, ...var_args: (goog.iter.Iterator|goog.iter.Iterable)[]): goog.iter.Iterator; /** * Creates an iterator that filters {@code iterable} based on a series of * {@code selectors}. On each call to {@code next()}, one item is taken from * both the {@code iterable} and {@code selectors} iterators. If the item from * {@code selectors} evaluates to true, the item from {@code iterable} is given. * Otherwise, it is skipped. Once either {@code iterable} or {@code selectors} * is exhausted, subsequent calls to {@code next()} will throw * {@code goog.iter.StopIteration}. * @see http://docs.python.org/2/library/itertools.html#itertools.compress * @param {!goog.iter.Iterator.|!goog.iter.Iterable} iterable The * iterable to filter. * @param {!goog.iter.Iterator.|!goog.iter.Iterable} selectors An * iterable of items to be evaluated in a boolean context to determine if * the corresponding element in {@code iterable} should be included in the * result. * @return {!goog.iter.Iterator.} A new iterator that returns the * filtered values. * @template VALUE */ function compress(iterable: goog.iter.Iterator|goog.iter.Iterable, selectors: goog.iter.Iterator|goog.iter.Iterable): goog.iter.Iterator; /** * Creates an iterator that returns arrays containing elements from the * {@code iterable} grouped by a key value. For iterables with repeated * elements (i.e. sorted according to a particular key function), this function * has a {@code uniq}-like effect. For example, grouping the array: * {@code [A, B, B, C, C, A]} produces * {@code [A, [A]], [B, [B, B]], [C, [C, C]], [A, [A]]}. * @see http://docs.python.org/2/library/itertools.html#itertools.groupby * @param {!goog.iter.Iterator.|!goog.iter.Iterable} iterable The * iterable to group. * @param {function(...[VALUE]): KEY=} opt_keyFunc Optional function for * determining the key value for each group in the {@code iterable}. Default * is the identity function. * @return {!goog.iter.Iterator.} A new iterator that returns arrays of * consecutive key and groups. * @template KEY, VALUE */ function groupBy(iterable: goog.iter.Iterator|goog.iter.Iterable, opt_keyFunc?: { (_0: VALUE[][]): KEY }): goog.iter.Iterator; /** * Gives an iterator that gives the result of calling the given function * f with the arguments taken from the next element from * iterable (the elements are expected to also be iterables). * * Similar to {@see goog.iter#map} but allows the function to accept multiple * arguments from the iterable. * * @param {!goog.iter.Iterable} iterable The iterable of * iterables to iterate over. * @param {function(this:THIS,...[*]):RESULT} f The function to call for every * element. This function takes N+2 arguments, where N represents the * number of items from the next element of the iterable. The two * additional arguments passed to the function are undefined and the * iterator itself. The function should return a new value. * @param {THIS=} opt_obj The object to be used as the value of 'this' within * {@code f}. * @return {!goog.iter.Iterator.} A new iterator that returns the * results of applying the function to each element in the original * iterator. * @template THIS, RESULT */ function starMap(iterable: goog.iter.Iterable, f: { (_0: any[][]): RESULT }, opt_obj?: THIS): goog.iter.Iterator; /** * Returns an array of iterators each of which can iterate over the values in * {@code iterable} without advancing the others. * @see http://docs.python.org/2/library/itertools.html#itertools.tee * @param {!goog.iter.Iterator.|!goog.iter.Iterable} iterable The * iterable to tee. * @param {number=} opt_num The number of iterators to create. Default is 2. * @return {!Array.>} An array of iterators. * @template VALUE */ function tee(iterable: goog.iter.Iterator|goog.iter.Iterable, opt_num?: number): goog.iter.Iterator[]; /** * Creates an iterator that returns arrays containing a count and an element * obtained from the given {@code iterable}. * @see http://docs.python.org/2/library/functions.html#enumerate * @param {!goog.iter.Iterator.|!goog.iter.Iterable} iterable The * iterable to enumerate. * @param {number=} opt_start Optional starting value. Default is 0. * @return {!goog.iter.Iterator.} A new iterator containing count/item * pairs. * @template VALUE */ function enumerate(iterable: goog.iter.Iterator|goog.iter.Iterable, opt_start?: number): goog.iter.Iterator; /** * Creates an iterator that returns the first {@code limitSize} elements from an * iterable. If this number is greater than the number of elements in the * iterable, all the elements are returned. * @see http://goo.gl/V0sihp Inspired by the limit iterator in Guava. * @param {!goog.iter.Iterator.|!goog.iter.Iterable} iterable The * iterable to limit. * @param {number} limitSize The maximum number of elements to return. * @return {!goog.iter.Iterator.} A new iterator containing * {@code limitSize} elements. * @template VALUE */ function limit(iterable: goog.iter.Iterator|goog.iter.Iterable, limitSize: number): goog.iter.Iterator; /** * Creates an iterator that is advanced {@code count} steps ahead. Consumed * values are silently discarded. If {@code count} is greater than the number * of elements in {@code iterable}, an empty iterator is returned. Subsequent * calls to {@code next()} will throw {@code goog.iter.StopIteration}. * @param {!goog.iter.Iterator.|!goog.iter.Iterable} iterable The * iterable to consume. * @param {number} count The number of elements to consume from the iterator. * @return {!goog.iter.Iterator.} An iterator advanced zero or more steps * ahead. * @template VALUE */ function consume(iterable: goog.iter.Iterator|goog.iter.Iterable, count: number): goog.iter.Iterator; /** * Creates an iterator that returns a range of elements from an iterable. * Similar to {@see goog.array#slice} but does not support negative indexes. * @param {!goog.iter.Iterator.|!goog.iter.Iterable} iterable The * iterable to slice. * @param {number} start The index of the first element to return. * @param {number=} opt_end The index after the last element to return. If * defined, must be greater than or equal to {@code start}. * @return {!goog.iter.Iterator.} A new iterator containing a slice of * the original. * @template VALUE */ function slice(iterable: goog.iter.Iterator|goog.iter.Iterable, start: number, opt_end?: number): goog.iter.Iterator; /** * Creates an iterator that returns permutations of elements in * {@code iterable}. * * Permutations are obtained by taking the Cartesian product of * {@code opt_length} iterables and filtering out those with repeated * elements. For example, the permutations of {@code [1,2,3]} are * {@code [[1,2,3], [1,3,2], [2,1,3], [2,3,1], [3,1,2], [3,2,1]]}. * @see http://docs.python.org/2/library/itertools.html#itertools.permutations * @param {!goog.iter.Iterator.|!goog.iter.Iterable} iterable The * iterable from which to generate permutations. * @param {number=} opt_length Length of each permutation. If omitted, defaults * to the length of {@code iterable}. * @return {!goog.iter.Iterator.>} A new iterator containing the * permutations of {@code iterable}. * @template VALUE */ function permutations(iterable: goog.iter.Iterator|goog.iter.Iterable, opt_length?: number): goog.iter.Iterator; /** * Creates an iterator that returns combinations of elements from * {@code iterable}. * * Combinations are obtained by taking the {@see goog.iter#permutations} of * {@code iterable} and filtering those whose elements appear in the order they * are encountered in {@code iterable}. For example, the 3-length combinations * of {@code [0,1,2,3]} are {@code [[0,1,2], [0,1,3], [0,2,3], [1,2,3]]}. * @see http://docs.python.org/2/library/itertools.html#itertools.combinations * @param {!goog.iter.Iterator.|!goog.iter.Iterable} iterable The * iterable from which to generate combinations. * @param {number} length The length of each combination. * @return {!goog.iter.Iterator.>} A new iterator containing * combinations from the {@code iterable}. * @template VALUE */ function combinations(iterable: goog.iter.Iterator|goog.iter.Iterable, length: number): goog.iter.Iterator; /** * Creates an iterator that returns combinations of elements from * {@code iterable}, with repeated elements possible. * * Combinations are obtained by taking the Cartesian product of {@code length} * iterables and filtering those whose elements appear in the order they are * encountered in {@code iterable}. For example, the 2-length combinations of * {@code [1,2,3]} are {@code [[1,1], [1,2], [1,3], [2,2], [2,3], [3,3]]}. * @see http://docs.python.org/2/library/itertools.html#itertools.combinations_with_replacement * @see http://en.wikipedia.org/wiki/Combination#Number_of_combinations_with_repetition * @param {!goog.iter.Iterator.|!goog.iter.Iterable} iterable The * iterable to combine. * @param {number} length The length of each combination. * @return {!goog.iter.Iterator.>} A new iterator containing * combinations from the {@code iterable}. * @template VALUE */ function combinationsWithReplacement(iterable: goog.iter.Iterator|goog.iter.Iterable, length: number): goog.iter.Iterator; }