iterUnitspace

Create an iterator which returns numbers incremented by 1.

Installation

npm install @stdlib/iter-unitspace

Usage

var iterUnitspace = require( '@stdlib/iter-unitspace' );

iterUnitspace( start[, stop] )

Returns an iterator which returns numbers incremented by 1.

var it = iterUnitspace( -5 );
// returns <Object>

var v = it.next().value;
// returns -5

v = it.next().value;
// returns -4

v = it.next().value;
// returns -3

// ...

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.

By default, the stopping value is +infinity, and, hence, the returned iterator is an infinite iterator (i.e., the iterator never ends). To specify an alternative stopping value, provide a second argument.

var it = iterUnitspace( 0, 2 );
// returns <Object>

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

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

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

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

Notes

• The returned iterator is guaranteed to return the start value and stops upon exceeding the stop value.
• If an environment supports Symbol.iterator, the returned iterator is iterable.

Examples

var iterUnitspace = require( '@stdlib/iter-unitspace' );

// Create an iterator:
var it = iterUnitspace( -50, 50 );

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

See Also

• @stdlib/array-from-iterator: create (or fill) an array from an iterator.
• @stdlib/iter-incrspace: create an iterator which returns evenly spaced numbers according to a specified increment.
• @stdlib/iter-linspace: create an iterator which returns evenly spaced numbers over a specified interval.
• @stdlib/iter-step: create an iterator which returns a sequence of numbers according to a specified increment.

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.