[Gretl-devel] Re: Datatypes of json items

On Mon, 17 Jun 2019, Allin Cottrell wrote: > On Sat, 15 Jun 2019, Artur Tarassow wrote: > >> Dear all, >> >> I hope you had a successful gretl conference in Naples! >> >> I am currently working with json files again. Using latest git version of >> gretl on Ubuntu linux (even though the behavior also occurs for older >> versions), I've found that some of the json-elements grabbed are not of the >> expected datatype. See the the following example and the file attached: >> >> >> <hansl> >> string PATH2JSON = "/home/at/tmp/"                    # set your path >> string jsonfile = sprintf("%s/ex_json_num_vector.json", PATH2JSON) >> string jread = readfile("@jsonfile") >> bundle B = jsongetb(jread) >> b = B.JSON >> >> # Evaluate type of elements >> #----------------------------------------------------- >> # Item         Expected        Is >> # v1        string                null >> # v2        string array       string array >> # v3        scalar               scalar >> # v4        matrix              string array >> >> loop i=1..nelem(b) -q >>     string str = "v$i" >>     eval b["@str"] >>     eval typestr(typeof(b["@str"])) >>     print "" >> endloop >> </hansl> >> >> Is there a rational reason for this behavior? > Not really. It seems that typeof() is not reaching inside bundles to > find the type of their contents. That should be made to happen. Ah, that comment was not quite right: the failure of typeof() to reach inside bundles (and arrays) was specific to the case of string objects. That's now fixed in git; snapshots will follow.