json excessively sparse array error

keszegh

in my app i got the following error when enconding to json:
Cannot serialise table: excessively sparse array

i want json to ignore this and generate the json file anyway, is that possible?

(or at least to catch this error within the app. i never did that, can you tell me how to do that?)

thanks

hgy29

Maybe you can tweak json encoder to just encode your data without failing ? See this: https://www.kyne.com.au/~mark/software/lua-cjson-manual.html#encode_sparse_array

Otherwise you can catch errors with pcall() lua function.

keszegh

i'm using the native json encoder so i could only tweak the data itself but that would be quite inconvenient.

keszegh

and i'd also need to know the constants set in the native json:
are these correct in the linked file?
-- "convert" must be a boolean. Default: false.
-- "ratio" must be a positive integer. Default: 2.
-- "safe" must be a positive integer. Default: 10.

in reality the optimal would be to be able to set these constants (in particular set ratio to 0 ) when running the json encoder, like
json.encode(convert,ratio,safe)
or
json.encode_sparse_array(true)
or something similar

hgy29

But this is already the case

keszegh

so the native json in gideros is the same as what you linked with all the parameters?
that's cool, then it's a matter of documentation to make us know about it, as here there should be at least a link to the details:
http://docs.giderosmobile.com/reference/plugin/json#json
thanks for letting me know.

hgy29

Yes, Json plugin is in reality Lua CJSON v 2.1.0 almost unmodified (well only modified to compile on all platforms). I agree that it should have been mentionned somewhere.