Re: C-binding external array.

[Ali Çehreli via Digitalmars-d-learn]

On 08/10/2016 02:05 AM, ciechowoj wrote:

On Tuesday, 9 August 2016 at 19:16:42 UTC, Steven Schveighoffer wrote:

D has an answer:

pragma(mangle, "tab")
extern extern(C) int[1] _ctab;

@property int* tab() { return _ctab.ptr; }

I still don't recommend doing this, for previously stated reasons.

This is really interesting :).

Better with some mixin magic:

mixin template CArray(string symbol, T) {
    pragma(mangle, symbol) extern extern(C) __gshared
    mixin ("T[0] _c" ~ symbol ~ ";");

    @property
    mixin ("T* " ~ symbol ~ "() { return _c" ~ symbol ~ ".ptr; }");
}

mixin CArray!("tab", int);

tab[42] = 42;

Ali