Zero length arrays in D

Eduard Staniloiu edi33416 at gmail.com
Mon Feb 18 13:34:37 UTC 2019


Hello

According to the spec[0], D supports zero length arrays [1].

I have given this a shot at https://run.dlang.io/is/PwbPxJ

Attempting to use the zero-length array results in a compiler 
error

`a.contents[2]` -> Error: array index 2 is out of bounds 
(*a).contents[0 .. 0]

The way I've used around this error is "safely" break/trick the 
type system

```
     int *p = a.contents.ptr;
     int[] p_cont = p[0 .. n];
     p_cont[2] = 10; // fine
```

Is this the intended way of working with zero length arrays?

Cheers,
Edi


[0] - https://dlang.org/spec/arrays.html#static-arrays, best 
practices pt 2
[1] - 
https://gcc.gnu.org/onlinedocs/gcc-4.7.4/gcc/Zero-Length.html


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