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# iterMod

> Create an [iterator][mdn-iterator-protocol] which performs an element-wise modulo operation of two or more [iterators][mdn-iterator-protocol].

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## Usage

```javascript
var iterMod = require( '@stdlib/math/iter/ops/mod' );
```

#### iterMod( iter0, ...iterator )

Returns an [iterator][mdn-iterator-protocol] which performs an element-wise modulo operation of two or more [iterators][mdn-iterator-protocol].

```javascript
var array2iterator = require( '@stdlib/array/to-iterator' );

var it1 = array2iterator( [ 3.0, -2.0 ] );
var it2 = array2iterator( [ 1.0, 4.0 ] );

var it = iterMod( it1, it2 );
// returns <Object>

var v = it.next().value;
// returns 0.0

v = it.next().value;
// returns -2.0

var bool = it.next().done;
// returns true
```

The returned [iterator][mdn-iterator-protocol] protocol-compliant object has the following properties:

-   **next**: function which returns an [iterator][mdn-iterator-protocol] protocol-compliant object containing the next iterated value (if one exists) assigned to a `value` property and a `done` property having a `boolean` value indicating whether the [iterator][mdn-iterator-protocol] is finished.
-   **return**: function which closes an [iterator][mdn-iterator-protocol] and returns a single (optional) argument in an [iterator][mdn-iterator-protocol] protocol-compliant object.

If provided a numeric value as an [`iterator`][mdn-iterator-protocol] argument, the value is broadcast as an **infinite** [iterator][mdn-iterator-protocol] which **always** returns the provided value.

```javascript
var array2iterator = require( '@stdlib/array/to-iterator' );

var arr = array2iterator( [ 1.0, 7.0 ] );

var it = iterMod( arr, 4.0 );
// returns <Object>

var v = it.next().value;
// returns 1.0

v = it.next().value;
// returns 3.0

var bool = it.next().done;
// returns true
```

</section>

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## Notes

-   If an iterated value is non-numeric (including `NaN`), the returned [iterator][mdn-iterator-protocol] returns `NaN`. If non-numeric iterated values are possible, you are advised to provide an [`iterator`][mdn-iterator-protocol] which type checks and handles non-numeric values accordingly.
-   The length of the returned [iterator][mdn-iterator-protocol] is equal to the length of the shortest provided [iterator][mdn-iterator-protocol]. In other words, the returned [iterator][mdn-iterator-protocol] ends once **one** of the provided [iterators][mdn-iterator-protocol] ends.
-   If an environment supports `Symbol.iterator` **and** provided [iterators][mdn-iterator-protocol] are iterable, the returned [iterator][mdn-iterator-protocol] is iterable.

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## Examples

<!-- eslint no-undef: "error" -->

```javascript
var iterDiscreteUniform = require( '@stdlib/random/iter/discrete-uniform' );
var iterMod = require( '@stdlib/math/iter/ops/mod' );

// Create an iterator which generates pseudorandom integers:
var rand = iterDiscreteUniform( 0, 100, {
    'iter': 100
});

// Create an iterator which performs an element-wise modulo operation:
var it = iterMod( rand, 10 );

// Perform manual iteration...
var v;
while ( true ) {
    v = it.next();
    if ( v.done ) {
        break;
    }
    console.log( v.value );
}
```

</section>

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</section>

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* * *

## See Also

-   <span class="package-name">[`@stdlib/math/iter/ops/divide`][@stdlib/math/iter/ops/divide]</span><span class="delimiter">: </span><span class="description">create an iterator which performs element-wise division of two or more iterators.</span>

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[mdn-iterator-protocol]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols#The_iterator_protocol

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[@stdlib/math/iter/ops/divide]: https://github.com/stdlib-js/math/tree/main/iter/ops/divide

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