@stdlib/assert-tools-array-like-function NPM

Array-Like Function

Return a function which tests if every element in an array-like object passes a test condition.

Installation

npm install @stdlib/assert-tools-array-like-function

Usage

var arraylikefcn = require( '@stdlib/assert-tools-array-like-function' );

arraylikefcn( predicate )

Returns a function which tests if every element in an array-like object passes a test condition. Given an input array-like object, the function returns true if all elements pass the test and false otherwise.

var isOdd = require( '@stdlib/assert-is-odd' );

var arr1 = [ 1, 3, 5, 7 ];
var arr2 = [ 3, 5, 8 ];

var f = arraylikefcn( isOdd );

var bool = f( arr1 );
// returns true

bool = f( arr2 );
// returns false

Notes

The returned function will return false if not provided an array-like object.
The returned function will return false if provided an empty array-like object.
A predicate function should accept a single argument: an element from an array-like object. If the element satisfies a test condition, the predicate function should return true; otherwise, the predicate function should return false.

Examples

var isEven = require( '@stdlib/assert-is-even' );
var arraylikefcn = require( '@stdlib/assert-tools-array-like-function' );

var arr1;
var arr2;
var bool;
var f;
var i;

arr1 = new Array( 25 );
for ( i = 0; i < arr1.length; i++ ) {
    arr1[ i ] = i;
}

arr2 = new Array( 25 );
for ( i = 0; i < arr2.length; i++ ) {
    arr2[ i ] = 2 * i;
}

f = arraylikefcn( isEven );

bool = f( arr1 );
// returns false

bool = f( arr2 );
// returns true

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.