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isBetweenArray
Test if a value is an array-like object where every element is between two values.
Installation
npm install @stdlib/assert-is-between-array
Usage
var isBetweenArray = require( '@stdlib/assert-is-between-array' );
isBetweenArray( value, a, b[, left, right] )
Tests if a value
is an array-like object
where every element is between two values a
(left comparison value) and b
(right comparison value).
var arr = [ 3, 4, 5 ];
var bool = isBetweenArray( arr, 3, 5 );
// returns true
bool = isBetweenArray( arr, 4, 5 );
// returns false
bool = isBetweenArray( arr, 3, 4 );
// returns false
By default, the function assumes that a
and b
are inclusive.
var arr = [ 3, 4, 5 ];
var bool = isBetweenArray( arr, 3, 5 );
// returns true
bool = isBetweenArray( arr, 3, 5, 'closed', 'closed' );
// returns true
To make a
and/or b
exclusive, set the respective arguments to 'open'
.
var arr = [ 3, 4, 5 ];
var bool = isBetweenArray( arr, 3, 5, 'open', 'closed' );
// returns false
bool = isBetweenArray( arr, 3, 5, 'closed', 'open' );
// returns false
Notes
-
If
a
andb
are inclusive, the element-wise comparison is equivalent toa <= v_i <= b
-
If
a
is exclusive andb
is inclusive, the element-wise comparison is equivalent toa < v_i <= b
-
If
a
is inclusive andb
is exclusive, the element-wise comparison is equivalent toa <= v_i < b
-
If
a
andb
are exclusive, the element-wise comparison is equivalent toa < v_i < b
-
If provided an empty array-like
object
, the function returnsfalse
.var bool = isBetweenArray( [], 0.0, 1.0 ); // returns false
-
If provided non-numeric values, element-wise comparisons are performed according to lexicographic order.
Examples
var randu = require( '@stdlib/random-base-randu' );
var filledarrayBy = require( '@stdlib/array-filled-by' );
var isBetweenArray = require( '@stdlib/assert-is-between-array' );
// Create an array of random numbers:
var x = filledarrayBy( 100, 'float64', randu );
// Check whether every element resides within the interval [0.01, 0.99]:
var bool = isBetweenArray( x, 0.01, 0.99 );
console.log( bool );
See Also
-
@stdlib/assert-is-between
: test if a value is between two values.
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 © 2016-2023. The Stdlib Authors.