[SOLVED] Return value of love.window.getMode

[DarkblooM]

Hello

Consider the following line:

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local w, h, f = love.window.getMode()

The f variable is empty? Am I misunderstanding the behavior of the getMode method?

[slime]

Can you post the code that checks whether it's empty? I don't think that should be possible.

[DarkblooM]

Can you post the code that checks whether it's empty? I don't think that should be possible.

I just do this:

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for i = 1, #f do
  print(f[i], type(f[i]))
end

But nothing appears on the console.

Edit:
Even something as basic as:

Code: Select all

print(#f)

Just prints 0 to the console.

[dusoft]

What platform are you on?

I see this when using print_r function that you can find around (http://lua-users.org/wiki/TableSerialization):

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[1] = 1920
[2] = 1080
[3]:
[stencil] = true
[depth] = 0
[x] = 0
[y] = 0
[minwidth] = 1
[minheight] = 1
[fullscreen] = true
[fullscreentype] = desktop
[display] = 1
[vsync] = 1
[msaa] = 0
[borderless] = false
[resizable] = false
[centered] = true
[highdpi] = false
[usedpiscale] = true
[refreshrate] = 60

[DarkblooM]

What platform are you on?

I see this when using print_r function that you can find around (http://lua-users.org/wiki/TableSerialization):

Code: Select all

[1] = 1920
[2] = 1080
[3]:
[stencil] = true
[depth] = 0
[x] = 0
[y] = 0
[minwidth] = 1
[minheight] = 1
[fullscreen] = true
[fullscreentype] = desktop
[display] = 1
[vsync] = 1
[msaa] = 0
[borderless] = false
[resizable] = false
[centered] = true
[highdpi] = false
[usedpiscale] = true
[refreshrate] = 60

Linux Mint 22

It seems to be working using pairs but what bogs me is that #f is still 0.

[slime]

# counts the number of array elements in a table, whereas the settings table in getMode/setMode only has named fields.

[DarkblooM]

I'm not sure I understand it fully but at least I now know how to work around it.

[dusoft]

I'm not sure I understand it fully but at least I now know how to work around it.

Check some Lua tutorials on tables (and their indexes) for clarification. And while you are at it, I recommend you check also pairs vs ipairs iteration (gaps/nils vs consecutive/integers) difference. These are common issues people have coming to Lua.

E.g. compare this with your solution:

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function table.length(table)
    local count = 0
    for _ in pairs(table) do
        count = count + 1
    end
    return count
end

[pgimeno]

The # operator will return zero unless the table has a consecutive series of numeric integer indices starting at 1 (it's not exactly true but close enough). If a table has no numeric indices, the # operator will return zero. I've been caught by that too.