On Thursday, 17 April 2014 at 00:55:19 UTC, Dicebot wrote:
Just in case, the key line to pay attention to in that example
is this one:
CellIndex[0] c_;
It is a commonly used C idiom for dynamically sized structures
that D also supports.
Absolutely. However, from a technical point of view, it doesn't
make the structure "dynamically sized". It is only a hack to
access data past the end of the struct.
You still have to manually and dynamically allocate the struct:
auto p = cast(State*)malloc(blockSize * stateSize);
And accessing data is done via .ptr, to avoid out of bounds.
CellIndex get(in size_t i) inout pure nothrow {
return c_.ptr[i];
}
