Re: [Early Feedback] Pattern matching

From: Date: Tue, 25 Jun 2024 22:19:49 +0000
Subject: Re: [Early Feedback] Pattern matching
References: 1 2 3 4 5 6 7 8 9  Groups: php.internals 
Request: Send a blank email to [email protected] to get a copy of this message 
On 2024-06-26 08:24, Rob Landers wrote:

On Tue, Jun 25, 2024, at 20:23, Ilija Tovilo wrote:



If null array values were indeed unobservable, then [] would be === to
[null] (or at least ==), and a foreach over [null] would result in 0
iterations. But neither of those are the case.


I think there is a difference between an empty array and a null, and that is (hopefully) self-evident. I’m talking about the infinite nulls IN the array. You can write a for loop of all possible keys until the end of the universe, and all you will get is null. This is fairly easy to prove. I'll wait... :p

What about the difference between an empty array an an array that contains a null (Ilija's example)?


echo count([]);
echo count([null]);
echo count([null, null]);
echo count([null, null, null]);
echo count([null, null, null, null]);
...

You're arguing that these are all the same array?

Thread (79 messages)

« previous php.internals (#123851) next »