December 01, 2010 parse json-string - operator overload error | ||||
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Hey guys, I'm trying to read a JSON-formated file. The parsing of the file seems to be correct, but I always get the following error: "Error: no [] operator overload for type JSONValue". For testing purposes, I also tried the code of http://www.digitalmars.com/d/archives/digitalmars/D/std.json_API_improvement_ -_Request_for_code_review_117261.html#N117302 without success (same error). My currently code looks like this: import std.stdio : writeln; import std.json; import std.stream; import std.conv; void main(string[] args) { File f = new File("test.json", FileMode.In); string content = to!(string)(f.readString(f.available())); JSONValue t = parseJSON(content); writeln(t["test"]); f.close(); } I hope anyone can help to find out what's wrong with the code above. |
May 17, 2012 Re: parse json-string - operator overload error | ||||
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Posted in reply to zusta | On Wednesday, 1 December 2010 at 08:17:37 UTC, zusta wrote:
> Hey guys,
>
> I'm trying to read a JSON-formated file. The parsing of the file seems to be
> correct, but I always get the following error:
>
> "Error: no [] operator overload for type JSONValue".
>
> For testing purposes, I also tried the code of
> http://www.digitalmars.com/d/archives/digitalmars/D/std.json_API_improvement_
> -_Request_for_code_review_117261.html#N117302 without success (same error).
>
> My currently code looks like this:
>
> import std.stdio : writeln;
> import std.json;
> import std.stream;
> import std.conv;
>
> void main(string[] args) {
>
> File f = new File("test.json", FileMode.In);
> string content = to!(string)(f.readString(f.available()));
> JSONValue t = parseJSON(content);
> writeln(t["test"]);
> f.close();
>
> }
>
> I hope anyone can help to find out what's wrong with the code above.
Assuming the file reading was not the fault:
string content = "{ \"test\": \"1\" }";
JSONValue[string] t = parseJSON(content).object;
writeln(t["test"].str);
This is one way to access the data in the file.
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