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‎CHANGELOG.md‎

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<section class="release" id="unreleased">
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## Unreleased (2025-11-10)
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## Unreleased (2025-11-29)
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<section class="features">
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### Features
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- [`4ebdf6c`](https://github.com/stdlib-js/stdlib/commit/4ebdf6c5b911d2bfde819ab56e654a22b9f85133) - add `object/any-in-by`
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- [`0c6de9f`](https://github.com/stdlib-js/stdlib/commit/0c6de9f46e489bf4d7a9f3899dbe963348fc7480) - update `object` TypeScript declarations
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- [`ccb87b6`](https://github.com/stdlib-js/stdlib/commit/ccb87b67fc9b58a37d5603ee1b86658bc70f0ef3) - add missing exports to namespaces
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- [`a2d3800`](https://github.com/stdlib-js/stdlib/commit/a2d3800b4450759ff17f368e1c274e650eab15fe) - add `assignIn` to namespace
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<details>
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- [`f03b259`](https://github.com/stdlib-js/stdlib/commit/f03b259e592ffe69c5c59f9f2d2a4a2cba508244) - **docs:** fix missing sections _(by Athan Reines)_
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- [`6ea3fff`](https://github.com/stdlib-js/stdlib/commit/6ea3fff1850167852dc0ea18003c1e0209d70335) - **refactor:** update paths _(by Neeraj Pathak)_
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- [`4ebdf6c`](https://github.com/stdlib-js/stdlib/commit/4ebdf6c5b911d2bfde819ab56e654a22b9f85133) - **feat:** add `object/any-in-by` _(by Neeraj Pathak)_
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- [`7849e6f`](https://github.com/stdlib-js/stdlib/commit/7849e6ffba5b1734a5314c5ded28602dd75e0f3c) - **style:** remove semicolons after function declarations _(by Philipp Burckhardt)_
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- [`5f5bb2d`](https://github.com/stdlib-js/stdlib/commit/5f5bb2d4277a24000b57fb07bc28d821500cd7e8) - **docs:** update namespace table of contents [(#8425)](https://github.com/stdlib-js/stdlib/pull/8425) _(by stdlib-bot, Athan Reines)_
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- [`0c6de9f`](https://github.com/stdlib-js/stdlib/commit/0c6de9f46e489bf4d7a9f3899dbe963348fc7480) - **feat:** update `object` TypeScript declarations _(by Philipp Burckhardt)_

‎any-in-by/README.md‎

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<!--
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@license Apache-2.0
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Copyright (c) 2024 The Stdlib Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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# anyInBy
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> Test whether at least one property in an object passes a test implemented by a predicate function.
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<!-- Section to include introductory text. Make sure to keep an empty line after the intro `section` element and another before the `/section` close. -->
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<section class="intro">
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</section>
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<!-- /.intro -->
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<!-- Package usage documentation. -->
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<section class="usage">
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## Usage
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```javascript
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var anyInBy = require( '@stdlib/object/any-in-by' );
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```
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#### anyInBy( object, predicate\[, thisArg ] )
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Tests whether at least one property in an `object` passes a test implemented by a `predicate` function.
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```javascript
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function isNegative( value ) {
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return ( value < 0 );
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}
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var obj = {
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'a': 1,
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'b': 2,
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'c': -1
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};
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var bool = anyInBy( obj, isNegative );
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// returns true
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```
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If a `predicate` function returns a truthy value, the function **immediately** returns `true`.
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```javascript
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function isPositive( value ) {
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if ( value < 0 ) {
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throw new Error( 'should never reach this line' );
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}
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return ( value > 0 );
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}
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var obj = {
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'a': 1,
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'b': -2,
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'c': 3
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};
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var bool = anyInBy( obj, isPositive );
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// returns true
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```
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The invoked `function` is provided three arguments:
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- **value**: property value.
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- **key**: property key.
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- **object**: input object.
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To set the function execution context, provide a `thisArg`.
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```javascript
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function sum( value ) {
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this.sum += value;
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this.count += 1;
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return ( value < 0 );
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}
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var obj = {
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'a': 1,
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'b': 2,
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'c': 3,
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'd': -4
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};
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var context = {
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'sum': 0,
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'count': 0
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};
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var bool = anyInBy( obj, sum, context );
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// returns true
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var mean = context.sum / context.count;
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// returns 0.5
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```
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</section>
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<!-- /.usage -->
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<!-- Package usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
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<section class="notes">
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## Notes
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- The `obj` object may contain own properties as well as inherited properties from its prototype chain.
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- If provided an empty object, the function returns `false`.
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```javascript
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function alwaysTrue() {
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return true;
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}
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var bool = anyInBy( {}, alwaysTrue );
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// returns false
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```
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</section>
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<!-- /.notes -->
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<!-- Package usage examples. -->
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<section class="examples">
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## Examples
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<!-- eslint no-undef: "error" -->
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```javascript
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var randu = require( '@stdlib/random/base/randu' );
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var anyInBy = require( '@stdlib/object/any-in-by' );
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function threshold( value ) {
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return ( value > 0.95 );
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}
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var bool;
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var obj = {};
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var i;
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for ( i = 0; i < 100; i++ ) {
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obj[i] = randu();
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}
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bool = anyInBy( obj, threshold );
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// returns <boolean>
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```
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</section>
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<!-- /.examples -->
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<!-- Section to include cited references. If references are included, add a horizontal rule *before* the section. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
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<section class="references">
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</section>
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<!-- /.references -->
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<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->
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<section class="related">
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</section>
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<!-- /.related -->
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<!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
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<section class="links">
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</section>
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<!-- /.links -->

‎any-in-by/benchmark/benchmark.js‎

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/**
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* @license Apache-2.0
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*
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* Copyright (c) 2024 The Stdlib Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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'use strict';
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// MODULES //
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var bench = require( '@stdlib/bench' );
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var isBoolean = require( '@stdlib/assert/is-boolean' ).isPrimitive;
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var isnan = require( '@stdlib/math/base/assert/is-nan' );
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var pkg = require( './../package.json' ).name;
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var anyInBy = require( './../lib' );
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// MAIN //
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bench( pkg, function benchmark( b ) {
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var bool;
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var obj;
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var i;
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function predicate( v ) {
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return isnan( v );
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}
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b.tic();
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for ( i = 0; i < b.iterations; i++ ) {
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obj = {
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'a': i,
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'b': i+1,
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'c': i+2,
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'd': i+3,
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'e': i+4,
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'f': NaN
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};
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bool = anyInBy( obj, predicate );
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if ( typeof bool !== 'boolean' ) {
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b.fail( 'should return a boolean' );
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}
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}
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b.toc();
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if ( !isBoolean( bool ) ) {
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b.fail( 'should return a boolean' );
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}
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b.pass( 'benchmark finished' );
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b.end();
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});
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bench( pkg+'::built-in', function benchmark( b ) {
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var bool;
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var keys;
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var obj;
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var i;
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function predicate( v ) {
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return isnan( v );
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}
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function testPredicate( key ) {
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return predicate( obj[ key ] );
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}
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b.tic();
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for ( i = 0; i < b.iterations; i++ ) {
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obj = {
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'a': i,
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'b': i+1,
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'c': i+2,
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'd': i+3,
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'e': i+4,
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'f': NaN
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};
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keys = Object.keys( obj );
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bool = keys.some( testPredicate );
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if ( typeof bool !== 'boolean' ) {
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b.fail( 'should return a boolean' );
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}
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}
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b.toc();
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if ( !isBoolean( bool ) ) {
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b.fail( 'should return a boolean' );
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}
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b.pass( 'benchmark finished' );
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b.end();
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});
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bench( pkg+'::loop', function benchmark( b ) {
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var bool;
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var keys;
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var obj;
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var i;
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var j;
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b.tic();
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for ( i = 0; i < b.iterations; i++ ) {
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obj = {
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'a': i,
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'b': i+1,
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'c': i+2,
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'd': i+3,
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'e': i+4,
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'f': NaN
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};
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keys = Object.keys( obj );
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bool = false;
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for ( j = 0; j < keys.length; j++ ) {
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if ( isnan( obj[ keys[j] ] ) ) {
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bool = true;
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break;
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}
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}
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if ( typeof bool !== 'boolean' ) {
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b.fail( 'should return a boolean' );
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}
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}
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b.toc();
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if ( !isBoolean( bool ) ) {
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b.fail( 'should be a boolean' );
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}
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b.pass( 'benchmark finished' );
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b.end();
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});

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