I'm looking for a C++ equivalent for the following PHP code
$obj = new stdClass();
$obj->test = "aaaa";
$var = "test";
echo $obj->{$var};
Is even possible in C? I keep looking for hours and no luck.
Thank you
Asked
Active
Viewed 176 times
4
user2035693
- 193
- 2
- 16
-
1This sounds like a hash table. – Raymond Chen Nov 11 '15 at 20:51
-
2Yes. Try std::map
– JCx Nov 11 '15 at 20:51 -
1Why do you want this? – GManNickG Nov 11 '15 at 20:52
-
1@JCx: Or `std::unordered_map` – Keith Thompson Nov 11 '15 at 20:55
-
@Keith probably a better choice, agreed. – JCx Nov 11 '15 at 20:57
-
1There isn't an equivalent - you can't get a member name as a string and convert it to the address of a member variable/function unless you have the offset of every single member variable/function. You have the same problem with VBScript, Javascript and Snobol. The features of some languages are just not translatable. – cup Nov 11 '15 at 21:12
1 Answers
6
Try:
#include <unordered_map>
#include <iostream>
#include <string>
using namespace std;
int main() {
unordered_map<string, string> obj;
obj["test"] = "aaaa";
string var = "test";
cout << obj[var] << endl;
}
It's not quite the same, as test is a string in both cases here. If it's the difference between "test" and plain test that's important then the answer becomes a bit more complicated.
See also: How to choose between map and unordered_map? to explain the discussion in the comments.
