Re: Re: Are exceptions allowed in php core?
| From: | Rasmus Lerdorf | Date: | Sun, 02 Sep 2012 00:27:02 +0000 |
| Subject: | Re: Re: Are exceptions allowed in php core? | ||
| References: | 1 2 3 4 5 6 7 8 | Groups: | php.internals |
| Request: | Send a blank email to internals+get-62640@lists.php.net to get a copy of this message | ||
On 09/01/2012 04:51 PM, Gustavo Lopes wrote
> * In fact, if there is a unifying theme in the usage of exceptions in
> PHP, is that exceptions are used when OOP interfaces are involved (see
> Zend interfaces, SPL, DateTime and PDO -- though optional there). The
> core vs. non-core argument only looks attractive because there are few
> built-in classes in the core.
I think this is drifting off-topic. Whether or not a generator is an
object is an implementation detail. If I write:
$things = getStuff();
foreach($things as $thing) {
do_some($thing);
}
which is very normal PHP that you see in millions of lines of code, I
would not expect to have to wrap my foreach in a try/catch here. Even if
I am used to exceptions and might have:
$things = getStuff();
foreach($things as $thing) {
try {
do_some($thing);
} catch (Exception $e) {
echo $e->getMessage();
}
}
this is still going to fatal on me eventually with an uncaught exception
on the foreach if, for example, I pass the generator a second time to
something and it has run off the end. This is something you don't have
to worry about currently and I think it will cause headaches for people
when they start passing generators around. In theory I should be able to
pass a generator to any existing code that takes an array without having
to worry about modifying that code to catch foreach exceptions. And yes,
I know it is actually a generator exception, but to the average user it
will look like it is foreach throwing.
-Rasmus