N = 100;
for idx = N:-1:1
    f(idx) = parfeval(backgroundPool,@rand,1); % Create a random scalar
end
result = NaN; % No result yet
for idx = 1:N
    [~, thisResult] = fetchNext(f);
    if thisResult > 0.95
        result = thisResult;
        % Have all the results needed, so break
        break;
    end
end
% With required result, cancel any remaining futures
cancel(F)
result

N = 100;
for idx = N:-1:1
    % Compute the rank of N magic squares
    F(idx) = parfeval(backgroundPool,@rank,1,magic(idx));
end % Build a waitbar to track progress
h = waitbar(0,'Waiting for FevalFutures to complete...');
results = zeros(1,N);
for idx = 1:N
    [completedIdx,thisResult] = fetchNext(F);
    % Store the result
    results(completedIdx) = thisResult;
    % Update waitbar
    waitbar(idx/N,h,sprintf('Latest result: %d',thisResult));
end
delete(h)