Problem with json.decode

jalmince

Having issues parsing a json encoded result from a web service, I came down to the following strange result:
running the following :

require("json") local a = json.encode( { 1, 2, 'fred', {first='mars',second='venus',third='earth'} } ) print( a) local b = json.decode( a) print( b)

one would expect the second print to display the initial value !?
but it is not the case ! why ?

ar2rsawseen

@jalmince and what would be the difference? can you also post the outputs?

jalmince

Here you go !

Uploading finished.
[1,2,"fred",{"first":"mars","third":"earth","second":"venus"}]
table: 07F5BD48

pls try the 5 lines of code, you should get the same result.

kredor7

That output would be correct. "b" is being returned as a table so you would reference to sections of that like

print(b[3])

Would print "fred"

print(b[4].first)

Would print "mars"

To show it all in the console you can use a recursive print function

function print_r (t, indent, done) done = done or {} indent = indent or '' local nextIndent -- Storage for next indentation value for key, value in pairs (t) do if type (value) == "table" and not done [value] then nextIndent = nextIndent or (indent .. string.rep(' ',string.len(tostring (key))+2)) -- Shortcut conditional allocation done [value] = true print (indent .. "[" .. tostring (key) .. "] => Table {"); print (nextIndent .. "{"); print_r (value, nextIndent .. string.rep(' ',2), done) print (nextIndent .. "}"); else print (indent .. "[" .. tostring (key) .. "] => " .. tostring (value).."") end end end   --then do print_r(b)

jalmince

thanks Kredor7 for that one !