Initial commit after splitting from main project

src/Partial.php

@@ -0,0 +1,23 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tez\Utils\Fn;
+
+/**
+ * Pre-fills the leading arguments of a callable and returns a new Closure
+ * that accepts the remaining arguments.
+ */
+final class Partial
+{
+    /**
+     * Returns a Closure with $partial pre-filled as the leftmost arguments.
+     * The returned Closure forwards any additional arguments to $fn.
+     */
+    public static function apply(callable $fn, mixed ...$partial): \Closure
+    {
+        return static function () use ($fn, $partial): mixed {
+            return $fn(...$partial, ...func_get_args());
+        };
+    }
+}