Code questions

First question: Is this real Lua? I am (still) a complete programming noob. Sorry guys

  Code:

function setup()
    fors()
end

function draw()
    background(50,50,50,255)
    fill(150,200,100,255)
    strokeWidth(2)
    for a = 1,w do
        for b = a,h do
            rect(xX[a],yY[b],WIDTH/w,HEIGHT/h)
        end
    end
end

function fors()
    h = 80
    w = 100
    xX = {}
    yY = {}
    for a = 1,w do
        local x = WIDTH/w*a-WIDTH/w
        table.insert(xX,x)
    end
    for a = 1,h do
        local y = HEIGHT/h*a-HEIGHT/h
        table.insert(yY,y)
    end
end



Second question, if I bump up w to 1000 and h to 800, it won't draw the rectangles. I'm not sure why.

I'm just playing around with drawing lots of rectangles on an iPad and wondering if maybe I have terrible methods for drawing grids

[bobdaduck]

Looks like lua to me! Does it throw any error messages? Maybe the rectangles are just too big.

^didnt see any, but idk how Codea works tbh

But, new theory, maybe iPad has limitations on what it can draw on screen. Also, realized that it was making the rectangles smaller than a pixel anyway which may have had something to do with it

ANYWAY... Ignoring that problem, I'll make a new question.

How should I save user inputs for a music writing app? Should I just throw everything in tables?

Yes, or even a table of tables if you want to be object oriented

  Code:

-- Table Of Tables

function setup()
    tables()
end

function draw()
    background(40, 40, 50)
    strokeWidth(2)
    fill(50,20,100,255)
    for i = 1,a*b do
        rect(coordinates[1][i],coordinates[2][i], WIDTH/a,HEIGHT/b)
        --X y width height of rectangle
    end
end

function tables()
    coordinates = {{},{}}
    a = 12
    b = 7
    for i = 1,a do
        for j = 1,b do
            local x = WIDTH/a*i-WIDTH/a
            local y = HEIGHT/b*j-HEIGHT/b
            table.insert(coordinates[1],x)
            table.insert(coordinates[2],y)
        end
    end
end


Table of tables like this?

Also, I only need 12 X coordinates and 7 y coordinates but I am pretty sure my for loops actually make 84 of each. Not sure, still trying to find a print command that actually tells me the number of items in a table

Try logprint(#table) to print the amount of elements in a table

I am not really sure what you are trying to do though, is it supposed to draw a bunch of triangles based on user input?

Actually rectangles arranged to look like a triangle, idk if rect(x, y, w, h) is a standard Lua command or if it's only in Codea like the touched function

Be easier if I had a desktop