write arrayvalue

[Younggi Lim]

I know that write StringValue and IntegerValue.
{
"account" : "javawork",
"serial" : 10
}

Json::Value writeValue;
writeValue["account"] = std::string("javawork");
writeValue["serial"] = 10;

but How do I write ArrayValue?
{
"friends":
    [
      "alice",
      "rabbit",
      "queen"
    ]
}

[venkat gunnu]

Hey Buddy!

By Any chance did u get this working. I am stuck with the same problem. Any help would be great.

Thanks
venkat

[venkat gunnu]

Some one might be interested.

Json::Value jValueRoot;
Json::Reader jReader;
_bstr_t sss = _T("[]");
if(jReader.parse((char *)(sss), jValueRoot))
{
   if(jValueRoot.isArray()){
      Json::Value widgetMem;
      widgetMem["name"] = 'name';
      Json::Value::UInt ii = jValueRoot.size();
      jValueRoot[ii] = widgetMem;
      Json::StyledWriter writer;
      std::string output = writer.write( jValueRoot );
   }
}

Thanks
venkat

[invisigoth]

I struggled a lot to do dis, but its actually quite easy :-)

    Json::FastWriter w;
    Json::Value root;

    Json::Value::UInt index=0;
    root["Features"][index]["test"]="null";

[Alexander Beedie]

i had a momentary pause on this point too, but it's actually trivial.
use ".append" on the node you want to add an array to.

Json::Value friend_node = root["friends"];
friend_node.append("alice");
friend_node.append("rabbit");
friend_node.append("queen");

makes it nice & easy to add arrays via looping, etc. you can also create 2D arrays (eg: arrays of arrays) easily in the same way, by looping appends onto the first/second/third/etc element in the array you just created.

[Barbu Paul - Gheorghe]

I know it's an old thread, but shouldn't be it:

Json::Value friend_node;
friend_node.append("alice");
friend_node.append("rabbit");
friend_node.append("queen");
root["friends"] = friend_node;

[henshao]

Json::Value& friend_node = root["friends"];
friend_node.append("alice");
friend_node.append("rabbit");
friend_node.append("queen");

maybe better.

[Anonymous]

Thanks Paulik , your solution got me working.