## Usage
```javascript
var ns = require( '@stdlib/iter' );
```
#### ns
Namespace containing iterator utilities.
```javascript
var objectKeys = require( '@stdlib/utils/keys' );
var keys = objectKeys( ns );
// e.g., returns [ 'iterAny', 'iterAnyBy', ... ]
```
- [`iterAdvance( iterator[, n] )`][@stdlib/iter/advance]: advance an iterator.
- [`iterAnyBy( iterator, predicate[, thisArg] )`][@stdlib/iter/any-by]: test whether at least one iterated value passes a test implemented by a predicate function.
- [`iterAny( iterator )`][@stdlib/iter/any]: test whether at least one iterated value is truthy.
- [`iterConcat( iter0, ...iterator )`][@stdlib/iter/concat]: create an iterator which iterates over the values of two or more iterators.
- [`iterConstant( value[, options] )`][@stdlib/iter/constant]: create an iterator which always returns the same value.
- [`iterCounter( iterator )`][@stdlib/iter/counter]: create an iterator which iteratively computes the number of iterated values.
- [`iterCuAnyBy( iterator, predicate[, thisArg] )`][@stdlib/iter/cuany-by]: create an iterator which cumulatively tests whether at least one iterated value passes a test implemented by a predicate function.
- [`iterCuAny( iterator )`][@stdlib/iter/cuany]: create an iterator which cumulatively tests whether at least one iterated value is truthy.
- [`iterCuEveryBy( iterator, predicate[, thisArg] )`][@stdlib/iter/cuevery-by]: create an iterator which cumulatively tests whether every iterated value passes a test implemented by a predicate function.
- [`iterCuEvery( iterator )`][@stdlib/iter/cuevery]: create an iterator which cumulatively tests whether every iterated value is truthy.
- [`iterCuNoneBy( iterator, predicate[, thisArg] )`][@stdlib/iter/cunone-by]: create an iterator which cumulatively tests whether every iterated value fails a test implemented by a predicate function.
- [`iterCuNone( iterator )`][@stdlib/iter/cunone]: create an iterator which cumulatively tests whether every iterated value is falsy.
- [`iterCuSomeBy( iterator, n, predicate[, thisArg] )`][@stdlib/iter/cusome-by]: create an iterator which cumulatively tests whether at least `n` iterated values pass a test implemented by a predicate function.
- [`iterCuSome( iterator, n )`][@stdlib/iter/cusome]: create an iterator which cumulatively tests whether at least `n` iterated values are truthy.
- [`iterDatespace( start, stop[, N][, options] )`][@stdlib/iter/datespace]: create an iterator which returns evenly spaced dates over a specified interval.
- [`iterDedupeBy( iterator, [limit,] fcn )`][@stdlib/iter/dedupe-by]: create an iterator which removes consecutive values that resolve to the same value according to a provided function.
- [`iterDedupe( iterator[, limit] )`][@stdlib/iter/dedupe]: create an iterator which removes consecutive duplicated values.
- [`iterDoUntilEach( iterator, predicate, fcn[, thisArg] )`][@stdlib/iter/do-until-each]: create an iterator which, while a test condition is false, invokes a function for each iterated value before returning the iterated value.
- [`iterDoWhileEach( iterator, predicate, fcn[, thisArg] )`][@stdlib/iter/do-while-each]: create an iterator which, while a test condition is true, invokes a function for each iterated value before returning the iterated value.
- [`iterEmpty()`][@stdlib/iter/empty]: create an empty iterator.
- [`iterEveryBy( iterator, predicate[, thisArg] )`][@stdlib/iter/every-by]: test whether every iterated value passes a test implemented by a predicate function.
- [`iterEvery( iterator )`][@stdlib/iter/every]: test whether all iterated values are truthy.
- [`iterFill( iterator, value[, begin[, end]] )`][@stdlib/iter/fill]: create an iterator which replaces all values from a provided iterator from a start index to an end index with a static value.
- [`iterFilterMap( iterator, fcn[, thisArg] )`][@stdlib/iter/filter-map]: create an iterator which both filters and maps the values of another iterator.
- [`iterFilter( iterator, predicate[, thisArg] )`][@stdlib/iter/filter]: create an iterator which filters the values of another iterator according to a predicate function.
- [`iterFirst( iterator )`][@stdlib/iter/first]: return the first iterated value.
- [`iterFlow( methods )`][@stdlib/iter/flow]: create a fluent interface for chaining together iterator methods.
- [`iterForEach( iterator, fcn[, thisArg] )`][@stdlib/iter/for-each]: create an iterator which invokes a function for each iterated value before returning the iterated value.
- [`iterHead( iterator, n )`][@stdlib/iter/head]: create an iterator which returns the first `n` values of a provided iterator.
- [`iterIncrspace( start, stop[, increment] )`][@stdlib/iter/incrspace]: create an iterator which returns evenly spaced numbers according to a specified increment.
- [`iterIntersectionByHash( iter0, ...iterator, hashFcn[, thisArg] )`][@stdlib/iter/intersection-by-hash]: create an iterator which returns the intersection of two or more iterators according to a hash function.
- [`iterIntersection( iter0, ...iterator )`][@stdlib/iter/intersection]: create an iterator which returns the intersection of two or more iterators.
- [`iterLast( iterator )`][@stdlib/iter/last]: consume an entire iterator and return the last iterated value.
- [`iterLength( iterator )`][@stdlib/iter/length]: return an iterator's length.
- [`iterLinspace( start, stop[, N] )`][@stdlib/iter/linspace]: create an iterator which returns evenly spaced numbers over a specified interval.
- [`iterLogspace( start, stop[, N][, options] )`][@stdlib/iter/logspace]: create an iterator which returns evenly spaced numbers over a specified interval.
- [`iterMap( iterator, fcn[, thisArg] )`][@stdlib/iter/map]: create an iterator which invokes a function for each iterated value.
- [`iterMapN( iter0, ...iterator, fcn[, thisArg] )`][@stdlib/iter/mapn]: create an iterator which transforms iterated values from two or more iterators by applying the iterated values as arguments to a provided function.
- [`iterNoneBy( iterator, predicate[, thisArg] )`][@stdlib/iter/none-by]: test whether every iterated value fails a test implemented by a predicate function.
- [`iterNone( iterator )`][@stdlib/iter/none]: test whether all iterated values are falsy.
- [`iterNth( iterator, n )`][@stdlib/iter/nth]: return the nth iterated value.
- [`iterThunk( iterFcn[, ...args] )`][@stdlib/iter/pipeline-thunk]: create an iterator "thunk".
- [`iterPipeline( iterFcn0[, ...iterFcn] )`][@stdlib/iter/pipeline]: create an iterator pipeline.
- [`iterPop( iterator[, clbk[, thisArg]] )`][@stdlib/iter/pop]: create an iterator which skips the last value of a provided iterator.
- [`iterPush( iterator, ...items )`][@stdlib/iter/push]: create an iterator which appends additional values to the end of a provided iterator.
- [`iterReject( iterator, predicate[, thisArg] )`][@stdlib/iter/reject]: create an iterator which rejects the values of another iterator according to a predicate function.
- [`iterReplicateBy( iterator, fcn[, thisArg] )`][@stdlib/iter/replicate-by]: create an iterator which replicates each iterated value according to a provided function.
- [`iterReplicate( iterator, n )`][@stdlib/iter/replicate]: create an iterator which replicates each iterated value a specified number of times.
- [`iterShift( iterator[, clbk[, thisArg]] )`][@stdlib/iter/shift]: create an iterator which skips the first value of a provided iterator.
- [`iterSlice( iterator[, begin[, end]] )`][@stdlib/iter/slice]: create an iterator which returns a subsequence of iterated values from a provided iterator.
- [`iterSomeBy( iterator, n, predicate[, thisArg] )`][@stdlib/iter/some-by]: test whether at least `n` iterated values pass a test implemented by a predicate function.
- [`iterSome( iterator, n )`][@stdlib/iter/some]: test whether at least `n` iterated values are truthy.
- [`iterStep( start, increment[, N] )`][@stdlib/iter/step]: create an iterator which returns a sequence of numbers according to a specified increment.
- [`iterStridedBy( iterator, fcn[, offset[, eager]][, thisArg] )`][@stdlib/iter/strided-by]: create an iterator which steps according to a provided callback function.
- [`iterStrided( iterator, stride[, offset[, eager]] )`][@stdlib/iter/strided]: create an iterator which steps by a specified amount.
- [`iterator2arrayviewRight( iterator, dest[, begin[, end]][, mapFcn[, thisArg]] )`][@stdlib/iter/to-array-view-right]: fill an array-like object view from right to left with values returned from an iterator.
- [`iterator2arrayview( iterator, dest[, begin[, end]][, mapFcn[, thisArg]] )`][@stdlib/iter/to-array-view]: fill an array-like object view with values returned from an iterator.
- [`iterUnion( iter0, ...iterator )`][@stdlib/iter/union]: create an iterator which returns the union of two or more iterators.
- [`iterUniqueByHash( iterator, hashFcn[, thisArg] )`][@stdlib/iter/unique-by-hash]: create an iterator which returns unique values according to a hash function.
- [`iterUniqueBy( iterator, predicate[, thisArg] )`][@stdlib/iter/unique-by]: create an iterator which returns unique values according to a predicate function.
- [`iterUnique( iterator )`][@stdlib/iter/unique]: create an iterator which returns unique values.
- [`iterUnitspace( start[, stop] )`][@stdlib/iter/unitspace]: create an iterator which returns numbers incremented by `1`.
- [`iterUnshift( iterator, ...items )`][@stdlib/iter/unshift]: create an iterator which prepends values to the beginning of a provided iterator.
- [`iterUntilEach( iterator, predicate, fcn[, thisArg] )`][@stdlib/iter/until-each]: create an iterator which, while a test condition is false, invokes a function for each iterated value before returning the iterated value.
- [`iterWhileEach( iterator, predicate, fcn[, thisArg] )`][@stdlib/iter/while-each]: create an iterator which, while a test condition is true, invokes a function for each iterated value before returning the iterated value.