Do a lot of similar calculations efficiently?

Say I want to calculate the value of a function f(x) for values 1 to 10000. I can easily use a FOR loop for that, but that appears to be very slow. Is there a way to do it more efficiently? Thanks for any suggestions.

It very much depends on your function. Loops themselves are not slow. You can put some simple math formula in a "Repeat 10000 times" loop, execute it on every tick and still get 60 fps.

Thanks. Does that mean "Repeat" is better than "For"?

No, I'm pretty sure in terms of performance they are the same.

what exactly is your logic? can you post a screenshot?

depending on the logic, some sort of caching might speed it up for you.

I am trying to create an array to store the values of some curve. What I have is this

For loop in 1:10000

Set Array.At(loopindex) = f(loopindex)

f is some mathematical function.

This is done at the start of layout, and I notice a lag (around 0.5 second) switching between layout. The game then runs at 60 frames per second, but I am just wondering if I can do something smarter so that user can experience a smoother transition.

I am trying to create an array to store the values of some curve. What I have is this

For loop in 1:10000

Set Array.At(loopindex) = f(loopindex)

f is some mathematical function.

This is done at the start of layout, and I notice a lag (around 0.5 second) switching between layout. The game then runs at 60 frames per second, but I am just wondering if I can do something smarter so that user can experience a smoother transition.

could you try some sort of wait screen or transition screen ?

Yeah, since you are doing this on start of layout, you can mask this lag using some transition effect.

For example, put a big black TiledBackground on top, add Fade behavior, set it to fade out and destroy after 1 second, then change your loop to this:

for x=0 to 9     -> Wait 0.1*loopindex
   for y=0 to 999  -> Set Array.At(loopindex("x")*1000+loopindex("y")) = f(loopindex("x")*1000+loopindex("y"))
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Thanks guys for the suggestion. Will try to implement it and see.