Partial classes

[Timon Gehr]

On 06/26/2012 09:29 PM, Artur Skawina wrote:
> On 06/26/12 20:21, Walter Bright wrote:
>> On 6/26/2012 3:53 AM, Jacob Carlborg wrote:
>>> replace arbitrary methods and classes, even in the standard library. In D you
>>> can overwrite an arbitrary piece of memory.
>>
>> Not when using safe code, you can't.
>
>     void poke(T)(size_t addr, T val) @safe pure {
>        T* ptr;
>        ptr[addr/T.sizeof] = val;
>     }
>
>     int i = 42;
>
>     void main() @safe {
>        writeln(i);
>        auto whatever = cast(size_t)&i;
>        poke(whatever, 666);
>        writeln(i);
>        poke(0, 0);
>     }
>
>     void writeln(A...)(A a) @trusted { import std.stdio; writeln(a); }
>
> artur

This is not legal D code. (pointer indexing is unsafe)