Stack based array

General JUCE discussion
1

What do people do when they want to pass around little arrays on the audio thread when the arrays don’t have a fixed size? Something like this?

template<class T>
class MiniStackArray
{
public:
    MiniStackArray(const std::initializer_list<T>& itemsToHold)
    {
        jassert(itemsToHold.size() < max_size);
        auto limit{ std::min(itemsToHold.size(), max_size) };
        auto iter{ itemsToHold.begin() };
        for (auto i = 0; i < limit; i++)
        {
            items[i] = *iter++;
        }
    };

    // Never have to implement iterators??
    constexpr auto getSpan() { return std::span{ items, size }; }
private:
    constexpr static size_t max_size{ 10 };
    T items[max_size] {};
    int size{};
};

I haven’t tested it… Is there a standard solution out there already?

2

Just answering my own question in case anyone searches the forum for the same thing:

1 Like
3

There’s also std::array which has a compile time size.

https://en.cppreference.com/w/cpp/container/array

4

Yeah, I saw an implementation where the ‘smallVector’ was indexing into a std::array actually.