On 2/22/20 2:29 PM, Robert M. Münch wrote:
I don't get how I can create a dynamic array of Cycle buffers of size 2
which use a struct.
struct ms {
int a;
int b;
}
ms[2] msBuffer;
alias circularStructBuffersT = typeof(cycle(msBuffer));
circularStructBuffersT[int] circularStructBuffers;
int i = 2;
auto x = circularStructBuffers.require(i, (){
ms[2] t;
return cycle(t,2);
});
It looks like require() requires :) a value, which it evaluates only if
necessary:
https://dlang.org/spec/hash-map.html#inserting_if_not_present
In your case, you're passing a callable. All you need to do is to
actually call that callable with empty parenthesis:
auto x = circularStructBuffers.require(i, {
// ...
}()); // <-- HERE
Because the parameter is lazy, it will still be called only when needed.
Ali
