auto iterator returned by find to handle value depending if is string or numeric.

[Alphadan28]

I want to make a function which finds a key by name in a json object it works fine when the value is double, but if the value comes as "130.34" it fails, what i need is a way to determine its type if is coming as string then to convert it to double.

the values may come as directly double or as double but in a string ex. "130.34"

double jfind(json jdata, char* keyName){
     auto keytofind = jdata.find(keyName);

// Check if  *keytofind is string or numeric ????? how to do it???

     if(keytofind != jdata.end()){
        return *keytofind;
     }else{
        return 0;
     }
}

[Alphadan28]

sorry i found this library quite confusing. removed from my project.

[nlohmann]

What exactly did you find confusing? There is a lot of documentation around, see https://nlohmann.github.io/json/

double jfind(const json& jdata, const char* keyName)
{
    const auto it = jdata.find(keyName);
    if (it != jdata.end() && it->is_number())
    {
        return *it;
    }
    else
    {
        return 0.0;
    }
}