Hi all,
I have a multimap, where key is an int and the value is a class. I can
insert into the multimap, but finding it difficult to retrieve the
value when keys match. I can do this with primitive types (int/char
etc).
Example:
class A {
public:
int vol;
int temp;
};
multimap<int, Amechanics;
multimap<int, A>::iterator it;
A aobj;
aobj.vol=10;
aobj.temp=20;
mechanics.inser t(pair<int, A>(5, aobj));
// many insert statements here....
std::pair<multi map<int,A>::ite rator,multimap< int,A>::iterato rret;
ret = mechanics.equal _range(5);
for (it=ret.first; it!=ret.second; ++it)
// How to read the object that matches the key in the multimap?
;
Upto this is okay, but then how can I find out the object
corresponding to the given key in the multimap?
Any help/pointers?
Regards. 1 2220 am************@ gmail.com wrote:
Hi all,
I have a multimap, where key is an int and the value is a class. I can
insert into the multimap, but finding it difficult to retrieve the
value when keys match. I can do this with primitive types (int/char
etc).
Strange. There is no difference when it comes to class types.
Example:
class A {
public:
int vol;
int temp;
};
multimap<int, Amechanics;
multimap<int, A>::iterator it;
A aobj;
aobj.vol=10;
aobj.temp=20;
mechanics.inser t(pair<int, A>(5, aobj));
// many insert statements here....
std::pair<multi map<int,A>::ite rator,multimap< int,A>::iterato rret;
ret = mechanics.equal _range(5);
for (it=ret.first; it!=ret.second; ++it)
// How to read the object that matches the key in the multimap?
Did you try
it->second
;
[snip]
Best
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