Can a map have a non primitive key?

Asked Dec 22 '13 at 17:23

Active Dec 22 '13 at 17:26

Viewed 48 times

What I'm trying to know is can I declare a map having a non-primitive key like this?

map <Aluno, int> grades;

Where Aluno is an object. My teacher didn't know the answer so I ask you guys. Is it possible or will I have to use integers, string, etc.?

edited Dec 22 '13 at 17:26

Mat

asked Dec 22 '13 at 17:23

André Silva

1

Yes it can. And there are plenty of SO questions concerning what must be in place for a user defined type to be used as key. – juanchopanza Dec 22 '13 at 17:24
Too easy to test with a compiler. – ScarletAmaranth Dec 22 '13 at 17:24
2

@ScarletAmaranth it isn't *that* easy. – juanchopanza Dec 22 '13 at 17:25
Since I had some problems using this kind of structure and my teacher pointed out that perhaps was because I was using a non primitive key. – André Silva Dec 22 '13 at 17:26
Definitely a duplicate. Sorry. – Shoe Dec 22 '13 at 17:26
Sorry, I didn't search correctly then. – André Silva Dec 22 '13 at 17:28
@user3127568, you would probably do us a favor if you could delete this question and just read [this](http://stackoverflow.com/questions/3417636/can-we-use-a-user-defined-class-for-the-key-in-a-stl-map) one instead. – Shoe Dec 22 '13 at 17:29

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