C#•2y ago

✅ Using an async method to print contents of an array

I'm trying to make a simon game and the next step I've decided on is that I need a method to draw the simon map. I'm using an async method so that I can delay the time in which it takes to show the next map, but when I call the method it only shows the first map. When I use the code without putting it inside a method, it works fine. I don't understand what I'm doing wrong:

19 Replies

GIGA BRAINOP•2y ago

https://paste.mod.gg/ceosbjyrsfsv/0

BlazeBin - ceosbjyrsfsv

A tool for sharing your source code with the world!

n8ta•2y ago

Can you include the code here?

GIGA BRAINOP•2y ago

sure

GIGA BRAINOP•2y ago

message.txt

GIGA BRAINOP•2y ago

// Prints every map after a delay of one second
//foreach (string s in Renders)
//{
//    Console.WriteLine(s);
//    await Task.Delay(1000);
//    Console.Clear();
//}
//Console.WriteLine("Complete!");


async Task DrawMap()
{
    foreach (string s in Renders)
    {
        Console.WriteLine(s);
        await Task.Delay(1000);
        Console.Clear();
    }
    Console.WriteLine("Complete!");
}


DrawMap();

// Prints every map after a delay of one second
//foreach (string s in Renders)
//{
//    Console.WriteLine(s);
//    await Task.Delay(1000);
//    Console.Clear();
//}
//Console.WriteLine("Complete!");


async Task DrawMap()
{
    foreach (string s in Renders)
    {
        Console.WriteLine(s);
        await Task.Delay(1000);
        Console.Clear();
    }
    Console.WriteLine("Complete!");
}


DrawMap();

jcotton42•2y ago

you're not awaiting DrawMap when you call it

Tvde1•2y ago

The console probably ends as it's finished executing each line of code

jcotton42•2y ago

also, in a console app like that, using the synchronous Thread.Sleep is fine

Tvde1•2y ago

(it doesn't know you want to wait for a background process)

GIGA BRAINOP•2y ago

so when I call DrawMap(); I need to include an await after? and gotcha on the thread.sleep, i saw on stackoverflow that people generally avoid it

jcotton42•2y ago

it's bad in things like GUI apps where it would block the UI thread or web apps where it would tie up threads that could be serving other requests in console apps it's not an issue before, not after await DrawMap();

GIGA BRAINOP•2y ago

ah i see ok thanks i'll see if i can implement thread.sleep instead does that also need an await before the drawmap?

jcotton42•2y ago

no it's not async

GIGA BRAINOP•2y ago

got it so in my case was my DrawMap(); method the background process?

Tvde1•2y ago

It starts one and returns the Task used to track the task

GIGA BRAINOP•2y ago

ah i think i get it, that's why i needed to have the "await" before calling the method

Tvde1•2y ago

Yep Tasks are pretty complicated if you go deep into it. But mostly, await when you want to wait for it to complete :)

GIGA BRAINOP•2y ago

gotcha, thanks 😄

Accord•2y ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

Gaming

Programming

✅ Using an async method to print contents of an array