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feat: add utils/any-own-by
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PR-URL: #1851
Closes: #819

---------

Signed-off-by: Philipp Burckhardt <[email protected]>
Co-authored-by: Philipp Burckhardt <[email protected]>
Reviewed-by: Philipp Burckhardt <[email protected]>
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Rec0iL99 and Planeshifter authored Mar 17, 2024
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206 changes: 206 additions & 0 deletions lib/node_modules/@stdlib/utils/any-own-by/README.md
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<!--
@license Apache-2.0
Copyright (c) 2024 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.
-->

# anyOwnBy

> Test whether at least one own property of a provided object passes a test implemented by a predicate function.
<!-- Section to include introductory text. Make sure to keep an empty line after the intro `section` element and another before the `/section` close. -->

<section class="intro">

</section>

<!-- /.intro -->

<!-- Package usage documentation. -->

<section class="usage">

## Usage

```javascript
var anyOwnBy = require( '@stdlib/utils/any-own-by' );
```

#### anyBy( collection, predicate\[, thisArg ] )

Tests whether at least one own property of a provided [`object`][mdn-object] passes a test implemented by a `predicate` function.

```javascript
function isNegative( value ) {
return ( value < 0 );
}

var obj = {
'a': 1,
'b': 2,
'c': 3,
'd': -24,
'e': 12
};

var bool = anyOwnBy( obj, isNegative );
// returns true
```

If a `predicate` function returns a truthy value, the function **immediately** returns `true`.

```javascript
function isPositive( value ) {
if ( value < 0 ) {
throw new Error( 'should never reach this line' );
}
return ( value > 0 );
}

var obj = {
'a': 1,
'b': 2,
'c': 3,
'd': -24,
'e': 12
};

var bool = anyOwnBy( obj, isPositive );
// returns true
```

The invoked `function` is provided three arguments:

- `value`: property value
- `key`: property key
- `obj`: input object

To set the function execution context, provide a `thisArg`.

```javascript
function verify( value ) {
this.sum += value;
this.count += 1;
return ( value > 0 );
}

var obj = {
'a': -1,
'b': -2,
'c': 3,
'd': -14
};

var context = {
'sum': 0,
'count': 0
};

var bool = anyOwnBy( obj, verify, context );
// returns true

var mean = context.sum / context.count;
// returns 0
```

</section>

<!-- /.usage -->

<!-- Package usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->

<section class="notes">

## Notes

- If provided an empty object, the function returns `false`.

```javascript
function verify() {
return true;
}
var bool = anyOwnBy( {}, verify );
// returns false
```

</section>

<!-- /.notes -->

<!-- Package usage examples. -->

<section class="examples">

## Examples

<!-- eslint no-undef: "error" -->

```javascript
var randu = require( '@stdlib/random/base/randu' );
var anyOwnBy = require( '@stdlib/utils/any-own-by' );
function threshold( value ) {
return ( value > 0.94 );
}
var bool;
var obj = {};
var keys = [ 'a', 'b', 'c', 'd', 'e' ];
var i;
for ( i = 0; i < keys.length; i++ ) {
obj[ keys[ i ] ] = randu();
}
bool = anyOwnBy( obj, threshold );
// returns <boolean>
```

</section>

<!-- /.examples -->

<!-- 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. -->

<section class="references">

</section>

<!-- /.references -->

<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->

<section class="related">


</section>

<!-- /.related -->

<!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->

<section class="links">

[mdn-object]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object

<!-- <related-links> -->


<!-- </related-links> -->

</section>

<!-- /.links -->
42 changes: 42 additions & 0 deletions lib/node_modules/@stdlib/utils/any-own-by/docs/repl.txt
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{{alias}}( object, predicate[, thisArg ] )
Tests whether at least one own property of an object passes a
test implemented by a predicate function.

The predicate function is provided three arguments:

- `value`: property value
- `index`: property key
- `object`: the input object

The function immediately returns upon encountering a truthy return
value.

If provided an empty object, the function returns `false`.

Parameters
----------
object: Object
Input object.

predicate: Function
Test function.

thisArg: any (optional)
Execution context.

Returns
-------
bool: boolean
The function returns `true` if the predicate function returns a truthy
value for one own property; otherwise, the function returns `false`.

Examples
--------
> function positive( v ) { return ( v > 0 ); };
> var obj = { 'a': -1, 'b': 2, 'c': -3 };
> var bool = {{alias}}( obj, positive )
true

See Also
--------

101 changes: 101 additions & 0 deletions lib/node_modules/@stdlib/utils/any-own-by/docs/types/index.d.ts
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/*
* @license Apache-2.0
*
* Copyright (c) 2024 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.
*/

// TypeScript Version: 4.1

/// <reference types="@stdlib/types"/>

/**
* Checks whether an own property of the object passes the test.
*
* @returns boolean indicating whether an own property of the object passes the test
*/
type Nullary<U> = ( this: U ) => boolean;

/**
* Checks whether an own property of the object passes the test.
*
* @param value - collection value
* @returns boolean indicating whether an own property of the object passes the test
*/
type Unary<T, U> = ( this: U, value: T ) => boolean;

/**
* Checks whether an own property of the object passes the test.
*
* @param value - property value
* @param key - property key
* @returns boolean indicating whether an own property of the object passes the test
*/
type Binary<T, U> = ( this: U, value: T, key: number ) => boolean;

/**
* Checks whether an own property of the object passes the test.
*
* @param value - property value
* @param key - property key
* @param object - input object
* @returns boolean indicating whether an own property of the object passes the test
*/
type Ternary<T, U> = ( this: U, value: T, key: number, object: Object ) => boolean;

/**
* Checks whether an own property of the object passes the test.
*
* @param value - property value
* @param key - property key
* @param object - input object
* @returns boolean indicating whether an own property of the object passes the tests
*/
type Predicate<T, U> = Nullary<U> | Unary<T, U> | Binary<T, U> | Ternary<T, U>;

/**
* Tests whether any property of an object passes a test implemented by a predicate function.
*
* ## Notes
*
* - The predicate function is provided three arguments:
*
* - `value`: property value
* - `key`: property key
* - `object`: the input object
*
* - The function immediately returns upon encountering a truthy return value.
* - If provided an empty object, the function returns `false`.
*
* @param object - input object
* @param predicate - test function
* @param thisArg - execution context
* @returns boolean indicating whether any own property pass a test
*
* @example
* function isPositive( v ) {
* return ( v > 0 );
* }
*
* var obj = { 'a': -1, 'b': 2, 'c': -3 };
*
* var bool = anyOwnBy( obj, isPositive );
* // returns true
*/
declare function anyOwnBy<T = unknown, U = unknown>( object: Record<string, unknown>, predicate: Predicate<T, U>, thisArg?: ThisParameterType<Predicate<T, U>> ): boolean;


// EXPORTS //

export = anyOwnBy;
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Coverage Report

Package Statements Branches Functions Lines
utils/any-own-by $\color{green}123/123$
$\color{green}+100.00\%$
$\color{green}10/10$
$\color{green}+100.00\%$
$\color{green}1/1$
$\color{green}+100.00\%$
$\color{green}123/123$
$\color{green}+100.00\%$

The above coverage report was generated for the changes in this push.

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