Task #100168
Updated by Oliver Hader over 1 year ago
Unfortunately PHP emphasizes "weak" over "map" in their new PHP 8
data-structure @\WeakMap@. As a result it cannot be passed to other
functions that would enrich an existing @\WeakMap@ - since objects
created in that function scope would not exist outside and thus
directly trigger garbage collection of @\WeakMap@.
As a substitute, @\TYPO3\CMS\Core\Type\Map@ is introduce with has a
similar behavior and got an additional @Map::fromEntries()@ factory.
Example:
<pre>
$map = new \TYPO3\CMS\Core\Type\Map();
$key = new \stdClass();
$value = new \stdClass();
$map[$key] = $value;
foreach ($map as $key => $value) { ... }
</pre>
* example Example of @\WeakMap@ draw-backs: https://3v4l.org/TSO37#v8.1.16
* example of @\SplObjectStorage@ draw-backs with @foreach@: https://3v4l.org/gloDO#v8.1.16