On Thu, 24 Jul 2014 13:54:12 GMT, Etienne Cimon wrote:

It should be specified in the docs, but I always use .to! on the Json object to verify its validity.

Be careful not to use .to!string on a string though, because it will add quotes " in that specific case. You must absolutely use .get!string on a string.

e.g. 

auto j = Json.emptyObject;
if (someBool)
	j["test"] = "hello";
string test;
if (j.test.to!bool == true){ // not undefined, length > 0
	test = j.test.get!string;
	assert(test == "hello");
	test = j.test.to!string;
	assert(test == "\"hello\"");
}
else
	assert(test.to!string == "undefined");