On Fri, 7 Feb 2025, 08:30 Mihail Liahimov, <91lia...@gmail.com> wrote:
> Thank you for your answer. Now I will give examples for better
> understanding.
>
> Simple examples from Typescript:
>
> let foo = ...
> foo!.bar()
> foo!.someProperty.baz()
>
> Examples of potentially using in PHP:
> Without this operator we writing this code:
>
> $foo = ...
>
> if ($foo === null) {
> throw new FooIsNullException();
> }
>
> $foo->bar.
>
> With this operator:
>
> $foo!->bar
> $foo!->someProperty->method();
> $foo!->someProperty->anotherProperty!->method();
>
> I think the postfix operator would be illogical in PHP because my operator
> is similar to the existing nullsafe operator in syntax. And it would be
> strange if its syntax were different.
> Or we can implement both operator syntaxes: prefix for accessing
> properties, and postfix for use with variables, as in your example.
>
> Nullsafe:
> $foo?->bar;
> Not null assertion:
> $foo!->bar;
>
> If variable bar would be null - php will throw an exception. But now i
> dont know which exception it would be :)
>
> This operator will be useful in cases where a null value in a specific
> place will violate the domain logic. Usually we write either assertions or
> checks and throw our exceptions for this. But it seems to me that the not
> null assertion operator will help avoid writing unnecessary code. The
> problem, of course, will be catching errors. It is not clear how to catch
> errors by a specific value. I will think about it.
>
Hi,
I don't see the point of this operator, php doesn't allow any operation
over null.
See https://3v4l.org/UJ5eg
It's throwing warning (mostly for backwards compatibility), I'd rather have
it throw error in next php version.
Static analysis already complain about it, so whats the point of !->
operator?
https://phpstan.org/r/c9d6e7b3-ac66-4e91-81e8-af0cafdc976c
