index.js

/**
* @license Apache-2.0
*
* Copyright (c) 2018 The Stdlib Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*    http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

'use strict';

var randu = require( '@stdlib/random/base/randu' );
var fromCodePoint = require( '@stdlib/string/from-code-point' );
var groupOwn = require( './../lib' );

var key;
var obj;
var out;
var i;

// Generate a random object...
obj = {};
for ( i = 0; i < 100; i++ ) {
	key = fromCodePoint( 97+i );
	obj[ key ] = randu();
}

function indicator( v ) {
	if ( v < 0.5 ) {
		return 'low';
	}
	return 'high';
}

// Compute the groups:
out = groupOwn( obj, indicator );
console.log( out );