Rapidjson help needed

Question

1.00/5 (1 vote)

See more:

Hi all I'm receiving a JSON array from a Web server and would like to know if there is a way using rapidjson to access field values by ordinal, the field "id" in the example code is always present but "title" can be different depending on the content

C++

for (SizeType i = 0; i < result_loop.Size(); i++)
{
    cout << result_loop[i]["id"].GetInt() << " - " << result_loop[i]["title"].GetString() << "\n";
}

sorry about the fomatting

What I have tried:

for (SizeType i = 0; i < result_loop.Size(); i++)
{
std::cout << result_loop[i]["id"].GetInt() << " - " << result_loop[i]["title"].GetString() << "\n";
}

Posted 10-May-16 4:36am

pkfox

Updated 10-May-16 5:56am

v2

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

KarstenK · Answer 1 · 2016-05-10T05:56:00

If it is not sure, that the data is in the answer data should should check before any access to avoid unwanted errors and its consequences.

C++

for (SizeType i = 0; i < result_loop.Size(); i++)
{
   var id =  result_loop[i]["id"];
   var title = result_loop[i]["title"];
    //check for validity
    if( (id != null) && (title !=null) ) {
       cout << id.GetInt() << " - " << title.GetString() << "\n";
    }
   // do some other error handling
}

Smart error handling is key to a smooth and bullet proof software. ;-)