Am 22.04.2019 um 23:47 schrieb Benjamin Morel:
These combine into a third advantage: readability. Today's equivalent of
the above one-liner could be:
/** @var EmailService $service */
$service = $diContainer->get('email.service');
if (! $service instanceof EmailService) {
throw new TypeError('Expected instance of EmailService, ...');
}
Today's equivalent is, at least for me, is this one-liner:
assert($service instanceof EmailService);
This way the IDE knows what type $service is supposed to be and there will
be an exception at runtime (given the appropriate configuration) when this
is not the case.
Personally, I prefer hand-written factories that have an explicit
createEmailService() method with a :EmailService return type declaration,
for example, over the implicitness of a dependency injection container as
the latter disguises and obscures dependencies.
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