feat: add array/base/pluck

lib/node_modules/@stdlib/array/base/pluck/README.md

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+<!--
+
+@license Apache-2.0
+
+Copyright (c) 2025 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.
+
+-->
+
+# pluck
+
+> Extract a property value from elements in an input object array and assign results to elements in a new output array.
+
+<!-- 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 pluck = require( '@stdlib/array/base/pluck' );
+```
+
+#### pluck( x, prop )
+
+Extracts a property value from elements in an input object array and assigns results to elements in a new output array.
+
+```javascript
+var x = [
+    {
+        'a': 1
+    },
+    {
+        'a': 2
+    },
+    {
+        'a': 3
+    }
+];
+
+var y = pluck( x, 'a' );
+// returns [ 1, 2, 3 ]
+```
+
+The function accepts the following arguments:
+
+-   **x**: input array.
+-   **prop**: property to extract values from.
+
+#### pluck.assign( x, prop, out, stride, offset )
+
+Extracts a property value from elements in an input object array and assigns results to elements in an output array.
+
+```javascript
+var x = [
+    {
+        'a': 1
+    },
+    {
+        'a': 2
+    },
+    {
+        'a': 3
+    }
+];
+
+var out = [ 0, 0, 0 ];
+var y = pluck.assign( x, 'a', out, 1, 0 );
+// returns [ 1, 2, 3 ]
+```
+
+The function accepts the following arguments:
+
+-   **x**: input array.
+-   **prop**: property to extract values from.
+-   **out**: output array.
+-   **stride**: stride length for output array.
+-   **offset**: starting index for output array.
+
+</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
+
+-   The function skips `undefined` and `null` array elements.
+
+    <!-- eslint-disable object-property-newline, object-curly-newline, object-curly-spacing -->
+
+    ```javascript
+    var arr = [
+        { 'a': 1, 'b': 2 },
+        null,
+        void 0,
+        { 'a': 0.5, 'b': 3 }
+    ];
+
+    var out = pluck( arr, 'a' );
+    // returns [ 1, , , 0.5 ]
+    ```
+
+-   Extracted values are **not** cloned.
+
+    <!-- eslint-disable object-property-newline, object-curly-newline, object-curly-spacing -->
+
+    ```javascript
+    var arr = [
+        { 'a': { 'b': 2 } },
+        { 'a': { 'b': 3 } }
+    ];
+
+    var out = pluck( arr, 'a' );
+    // returns [ { 'b': 2 }, { 'b': 3 } ]
+
+    var bool = ( arr[ 0 ].a === out[ 0 ] );
+    // returns true
+    ```
+
+-   The function supports array-like objects having getter and setter accessors for array element access (e.g., [`@stdlib/array/base/accessor`][@stdlib/array/base/accessor]).
+
+
+</section>
+
+<!-- /.notes -->
+
+<!-- Package usage examples. -->
+
+<section class="examples">
+
+## Examples
+
+<!-- eslint no-undef: "error" -->
+
+```javascript
+var randu = require( '@stdlib/random/base/randu' );
+var round = require( '@stdlib/math/base/special/round' );
+var pluck = require( '@stdlib/array/base/pluck' );
+
+var arr;
+var tmp;
+var out;
+var i;
+var j;
+
+// Generate a 100x5 2d-array...
+arr = new Array( 100 );
+for ( i = 0; i < arr.length; i++ ) {
+    tmp = new Array( 5 );
+    for ( j = 0; j < tmp.length; j++ ) {
+        tmp[ j ] = round( randu()*100.0*(j+1.0) );
+    }
+    arr[ i ] = tmp;
+}
+
+// Pluck the 3rd column:
+out = pluck( arr, 2 );
+console.log( out );
+```
+
+</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. Do not manually edit this section, as it is automatically populated. -->
+
+<section class="links">
+
+[@stdlib/array/base/accessor]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/array/base/accessor
+
+</section>
+
+<!-- /.links -->

lib/node_modules/@stdlib/array/base/pluck/benchmark/benchmark.assign.js

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+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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';
+
+// MODULES //
+
+var bench = require( '@stdlib/bench' );
+var isArray = require( '@stdlib/assert/is-array' );
+var randu = require( '@stdlib/random/base/randu' );
+var round = require( '@stdlib/math/base/special/round' );
+var pkg = require( './../package.json' ).name;
+var pluck = require( './../lib' );
+
+
+// MAIN //
+
+bench( pkg+':assign', function benchmark( b ) {
+	var out;
+	var tmp;
+	var x;
+	var y;
+	var i;
+
+	x = new Array( 100 );
+	for ( i = 0; i < x.length; i++ ) {
+		tmp = new Array( 5 );
+		for ( j = 0; j < tmp.length; j++ ) {
+			tmp[ j ] = round( randu()*100.0*(j+1.0) );
+		}
+		x[ i ] = tmp;
+	}
+	out = new Array( x.length );
+
+	b.tic();
+	for ( i = 0; i < b.iterations; i++ ) {
+		x[ i % x.length ][ i % 5 ] = randu();
+		out = pluck.assign( x, 2, y, 1, 0 );
+		if ( typeof out !== 'object' ) {
+			b.fail( 'should return an array' );
+		}
+	}
+	b.toc();
+	if ( !isArray( out ) ) {
+		b.fail( 'should return an array' );
+	}
+	b.pass( 'benchmark finished' );
+	b.end();
+});

lib/node_modules/@stdlib/array/base/pluck/benchmark/benchmark.js

@@ -0,0 +1,62 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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';
+
+// MODULES //
+
+var bench = require( '@stdlib/bench' );
+var isArray = require( '@stdlib/assert/is-array' );
+var randu = require( '@stdlib/random/base/randu' );
+var round = require( '@stdlib/math/base/special/round' );
+var pkg = require( './../package.json' ).name;
+var pluck = require( './../lib' );
+
+
+// MAIN //
+
+bench( pkg, function benchmark( b ) {
+	var out;
+	var tmp;
+	var x;
+	var i;
+	var j;
+
+	x = new Array( 100 );
+	for ( i = 0; i < x.length; i++ ) {
+		tmp = new Array( 5 );
+		for ( j = 0; j < tmp.length; j++ ) {
+			tmp[ j ] = round( randu()*100.0*(j+1.0) );
+		}
+		x[ i ] = tmp;
+	}
+	b.tic();
+	for ( i = 0; i < b.iterations; i++ ) {
+		x[ i % x.length ][ i % 5 ] = randu();
+		out = pluck( x, 2 );
+		if ( typeof out !== 'object' ) {
+			b.fail( 'should return an array' );
+		}
+	}
+	b.toc();
+	if ( !isArray( out ) ) {
+		b.fail( 'should return an array' );
+	}
+	b.pass( 'benchmark finished' );
+	b.end();
+});