null == "" is true?

[user1234]

On Tuesday, 12 July 2022 at 16:40:38 UTC, H. S. Teoh wrote:
> On Tue, Jul 12, 2022 at 04:27:44PM +0000, Antonio via 
> Digitalmars-d-learn wrote:
>> It works
>> 
>> ```d
>> void main()
>> {
>>    assert(null=="");
>> }
>> ```
>> 
>> why?
>
> Because an empty string is, by default, represented by an empty 
> slice of the null pointer.
>
> Do not rely on this, however;

Absolutely. I'd like to add: especially as default parameter 
value that's an array. Never use null. use `[]` (empty array 
literal).