On 16/11/2021 09:27, Andreas Heigl wrote:
I see, yes, code that is 100% perfectly tested can get away without
the language performing any error checking at all - the behaviour is
all guaranteed by the tests. I would be very surprised if even 1% of
PHP applications can claim such comprehensive tests.
The topic here was that new code can verify the declaration of a
property by using tests. That does not need to happen on the language
level. I was never talking about adding tests for existing code.
Whether the code is "new" or "old" is not what matters; what matters is
whether the test suite is comprehensive enough that every possible
mistake will be caught by a test. If it will, we can remove a whole
bunch of language features - why use parameter and property types, for
instance, if your tests guarantee that they will always be given correct
values?
For most code bases, even new ones being written from scratch in PHP
8.0, that level of testing simply doesn't exist, and having the language
tell you "hey, you wrote $this->loger instead of $this->logger" is a
useful feature. And, in a lot of cases, more useful than having the
language say "OK, I've created your dynamic $loger property for you",
which is what currently happens.
Regards,
--
Rowan Tommins
[IMSoP]
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