Bad array indexing is considered deadly

[Steven Schveighoffer via Digitalmars-d]

On 5/31/17 10:07 AM, Steven Schveighoffer wrote:

> Here is complete implementation (should be @safe too):
>
> struct ExArr(T, size_t dim)
> {
>     T[dim] _value;
>     alias _value this;
>     ref inout(T) opIndex(size_t idx, string fname = __FILE__, size_t
> linenum = __LINE__) inout
>     {
>         if(idx >= dim)
>             throw new Exception("Index out of bounds", fname, linenum);
>         static ref x(ref inout(T[dim]) val, size_t i) @trusted { return
> val.ptr[i]; }
>         return x(_value, idx);
>     }
> }

Just realized, that @trusted escape is just so unnecessarily verbose.

struct ExArr(T, size_t dim)
{
     T[dim] _value;
     alias _value this;
     ref inout(T) opIndex(size_t idx, string fname = __FILE__, size_t 
linenum = __LINE__) inout @trusted
     {
         if(idx >= dim)
             throw new Exception("Index out of bounds", fname, linenum);
         return _value.ptr[idx];
     }
}

-Steve