added Array::invoke() & invokeMethod()

Author: dg

src/Utils/Arrays.php

@@ -320,6 +320,34 @@ public static function map(array $array, callable $callback): array
 	}
 
 
+	/**
+	 * Invokes all callbacks and returns array of results.
+	 * @param  callable[]  $callbacks
+	 */
+	public static function invoke(iterable $callbacks, ...$args): array
+	{
+		$res = [];
+		foreach ($callbacks as $k => $cb) {
+			$res[$k] = $cb(...$args);
+		}
+		return $res;
+	}
+
+
+	/**
+	 * Invokes method on every object in an array and returns array of results.
+	 * @param  object[]  $objects
+	 */
+	public static function invokeMethod(array $objects, string $method, ...$args): array
+	{
+		$res = [];
+		foreach ($objects as $k => $obj) {
+			$res[$k] = $obj->$method(...$args);
+		}
+		return $res;
+	}
+
+
 	/**
 	 * Copies the elements of the $array array to the $object object and then returns it.
 	 * @param  object  $object

tests/Utils/Arrays.invoke.phpt

@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types=1);
+
+use Nette\Utils\Arrays;
+use Tester\Assert;
+
+
+require __DIR__ . '/../bootstrap.php';
+
+
+class Test
+{
+	public function fn1(...$args)
+	{
+		return __METHOD__ . ' ' . implode(',', $args);
+	}
+
+
+	public function fn2(...$args)
+	{
+		return __METHOD__ . ' ' . implode(',', $args);
+	}
+}
+
+
+$list = [];
+$list[] = [new Test, 'fn1'];
+$list['key'] = [new Test, 'fn2'];
+
+Assert::same(
+	['Test::fn1 a,b', 'key' => 'Test::fn2 a,b'],
+	Arrays::invoke($list, 'a', 'b')
+);
+
+Assert::same(
+	['Test::fn1 a,b', 'key' => 'Test::fn2 a,b'],
+	Arrays::invoke(new ArrayIterator($list), 'a', 'b')
+);

tests/Utils/Arrays.invokeMethod.phpt

@@ -0,0 +1,30 @@
+<?php
+
+declare(strict_types=1);
+
+use Nette\Utils\Arrays;
+use Tester\Assert;
+
+
+require __DIR__ . '/../bootstrap.php';
+
+
+class Test1
+{
+	public function fn(...$args)
+	{
+		return static::class . ' ' . implode(',', $args);
+	}
+}
+
+class Test2 extends Test1
+{
+}
+
+
+$list = [new Test1, 'key' => new Test2];
+
+Assert::same(
+	['Test1 a,b', 'key' => 'Test2 a,b'],
+	Arrays::invokeMethod($list, 'fn', 'a', 'b')
+);