On 7/12/22 12:27 PM, Antonio wrote:
It works
```d
void main()
{
assert(null=="");
}
```
why?
A string is not exactly a reference type. It's a length and a pointer.
This can be confusing to newcomers, especially ones that come from
languages that treat arrays and strings as object references.
`null` as an array with `0` length and `null` pointer.
`""` is an array with `0` length and a pointer to a zero character (not
`null`).
The algorithm to compare *any* arrays is first verify the lengths are
the same. Then for each element in the array, compare them. Since there
are 0 elements in both the empty string and the null string, they are equal.
-Steve
