How to get the size of a table/object in love2d

[Gunroar:Cannon()]

I'm wondering if there's a way to get the size of a table in love2d specifically. I checked and I found an answer with a module that's like a new lua version but with getSize or its in C or one other thing that doesn't make it seem usable in löve to me, unless maybe it's rebuilt which I'd like to avoid.
So is there any built in function in love2d or method to et the size of an object?

[darkfrei]

I know only

Code: Select all

local size=0
for i, v in pairs (tabl) do
  size=size+1
end
print(size)

[togFox]

$tabl will return the number of elements - if that's what you mean.

[ivan]

#tabl only works for numerically-indexed tables without gaps.
For all other tables you have to use darkfrei's method to count the number of non-nil elements.
Check out my table.lua library for similar functions: https://github.com/2dengine/table.lua

[Gunroar:Cannon()]

#tabl only works for numerically-indexed tables without gaps.
For all other tables you have to use darkfrei's method to count the number of non-nil elements.
Check out my table.lua library for similar functions: https://bitbucket.org/itraykov/table.lua/src/master/

No, sorry, I mean getting the size in kb/mb(I see the confusion, my fault )

[ivan]

No, there is no way to know how much memory the table consumes, Lua is a scripted language with managed memory (NOT pre-allocated). You can't measure the size of a reference to another table. There could be cycles and so forth. It's not like you can garbage collect any table and expect a specific amount of memory to be freed up.
ffi has ffi.sizeof but that's strictly for cdata objects: https://luajit.org/ext_ffi_api.html

[darkfrei]

See:
https://github.com/kikito/bump.lua#demos

Somehow the memory size:

[ivan]

That looks like collectgarbage("count") which measures the total amount of Lua memory for the current thread. Does not include love2d images, sounds or other assets.