@stdlib/math-iter-sequences-nonpositive-integers

About stdlib...

We believe in a future in which the web is a preferred environment for numerical computation. To help realize this future, we've built stdlib. stdlib is a standard library, with an emphasis on numerical and scientific computation, written in JavaScript (and C) for execution in browsers and in Node.js.

The library is fully decomposable, being architected in such a way that you can swap out and mix and match APIs and functionality to cater to your exact preferences and use cases.

When you use stdlib, you can be absolutely certain that you are using the most thorough, rigorous, well-written, studied, documented, tested, measured, and high-quality code out there.

To join us in bringing numerical computing to the web, get started by checking us out on GitHub, and please consider financially supporting stdlib. We greatly appreciate your continued support!

iterNonPositiveIntegersSeq

Create an iterator which generates a nonpositive integer sequence.

Installation

npm install @stdlib/math-iter-sequences-nonpositive-integers

Usage

var iterNonPositiveIntegersSeq = require( '@stdlib/math-iter-sequences-nonpositive-integers' );

iterNonPositiveIntegersSeq( [options] )

Returns an iterator which generates a nonpositive integer sequence.

var it = iterNonPositiveIntegersSeq();
// returns <Object>

var v = it.next().value;
// returns 0

v = it.next().value;
// returns -1

v = it.next().value;
// returns -2

// ...

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

• next: function which returns an iterator 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 is finished.
• return: function which closes an iterator and returns a single (optional) argument in an iterator protocol-compliant object.

The function supports the following options:

• iter: number of iterations. Default: 9007199254740992.

By default, the function returns a finite iterator to avoid exceeding the maximum safe double-precision floating-point integer. To adjust the number of iterations, set the iter option.

var opts = {
    'iter': 2
};
var it = iterNonPositiveIntegersSeq( opts );
// returns <Object>

var v = it.next().value;
// returns 0

v = it.next().value;
// returns -1

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

Notes

• If an environment supports Symbol.iterator, the returned iterator is iterable.

Examples

var iterNonPositiveIntegersSeq = require( '@stdlib/math-iter-sequences-nonpositive-integers' );

// Create an iterator:
var opts = {
    'iter': 100
};
var it = iterNonPositiveIntegersSeq( opts );

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

---

See Also

• @stdlib/math-iter/sequences/integers: create an iterator which generates an interleaved integer sequence.
• @stdlib/math-iter/sequences/negative-integers: create an iterator which generates a negative integer sequence.
• @stdlib/math-iter/sequences/nonnegative-integers: create an iterator which generates a nonnegative integer sequence.
• @stdlib/math-iter/sequences/positive-integers: create an iterator which generates a positive integer sequence.

---

Notice

This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.

Community

---

License

See LICENSE.

Copyright

Copyright © 2016-2024. The Stdlib Authors.