std::multimap<> C++ Solaris SunStudio 12 complilation error

#include <iostream>
#include <map>
#include <string>

main(int argc, char* argv[])
{
    std::multimap<int, int> test;
    test.insert(std::pair<int,int>((int)1, (int)3));
}


CC mapTest.C
 

"mapTest.C", line 51: Error: Could not find a match for std::multimap<int, int, std::less<int>, std::allocator<std::pair<const int, int>>>::insert(std::pair<int, int>) needed in main(int, char**).



Any help would help.


Thanks
sriramAsked:
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Infinity08Connect With a Mentor Commented:
This seems to be a known issue with your compiler (or better yet, the STL implementation it's using).

In your compiler, for std::multimap<int, int>, the value type is std::pair<const int, int>, and not std::pair<int, int>.

So try using :

test.insert(std::multimap<int, int>::value_type((int)1, (int)3));

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instead of :

test.insert(std::pair<int,int>((int)1, (int)3));

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0
 
sarabandeConnect With a Mentor Commented:
here is sample code from msdn

// multimap_insert.cpp
#include <map>
#include <iostream>

int main( )
{
   using namespace std;
   multimap <int, int>::iterator m1_pIter, m2_pIter;

   multimap <int, int> m1, m2;
   typedef pair <int, int> Int_Pair;

   m1.insert ( Int_Pair ( 1, 10 ) );
   m1.insert ( Int_Pair ( 2, 20 ) );
   m1.insert ( Int_Pair ( 3, 30 ) );

   cout << "The original key values of m1 =";
   for ( m1_pIter = m1.begin( ); m1_pIter != m1.end( ); m1_pIter++ )
      cout << " " << m1_pIter -> first;
   cout << "." << endl;

   cout << "The original mapped values of m1 =";
   for ( m1_pIter = m1.begin( ); m1_pIter != m1.end( ); m1_pIter++ )
      cout << " " << m1_pIter -> second;
   cout << "." << endl;

   m1.insert ( Int_Pair ( 1, 10 ) );

   // The hint version of insert
   m1.insert( --m1.end( ), Int_Pair ( 4, 40 )  );

   cout << "After the insertions, the key values of m1 =";
   for ( m1_pIter = m1.begin( ); m1_pIter != m1.end( ); m1_pIter++ )
      cout << " " << m1_pIter -> first;
   cout << "," << endl;

   cout << " and the mapped values of m1 =";
   for ( m1_pIter = m1.begin( ); m1_pIter != m1.end( ); m1_pIter++ )
      cout << " " << m1_pIter -> second;
   cout << "." << endl;

   m2.insert ( Int_Pair ( 10, 100 ) );

   // The templatized version inserting a range
   m2.insert( ++m1.begin( ), --m1.end( ) );

   cout << "After the insertions, the key values of m2 =";
   for ( m2_pIter = m2.begin( ); m2_pIter != m2.end( ); m2_pIter++ )
      cout << " " << m2_pIter -> first;
   cout << "," << endl;

   cout << " and the mapped values of m2 =";
   for ( m2_pIter = m2.begin( ); m2_pIter != m2.end( ); m2_pIter++ )
      cout << " " << m2_pIter -> second;
   cout << "." << endl;
}

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easier to handle than multimap<int, int> is std::map<int, std::vector<int> >.

std::map<int, std::vector<int> > test;
test[1].push_back(3);  
test[1].push_back(5);

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Sara
0
 
sriramAuthor Commented:
Thank You! I liked multimap<int, vector<>> too. If ::value_type doesn't work I will use vector as a workaround.

I tried using ::value_type(); worked for multimap<int,int> but got errors for class type multimap<long, FDProcess*>; where FDProcess is the class.



"/opt/SUNWspro/prod/include/CC/Cstd/rw/tree.cc", line 178: Error: Formal argument s1 of type std::string & in call to ltstr::operator()(std::string &, std::string &) const is being passed const unsigned long&.
"/opt/SUNWspro/prod/include/CC/Cstd/./map", line 489:     Where: While instantiating "__rwstd::__rb_tree<unsigned long, std::pair<const unsigned long, FDProcessor*>, __rwstd::__select1st<std::pair<const unsigned long, FDProcessor*>, unsigned long>, ltstr, std::allocator<std::pair<const unsigned long, FDProcessor*>>>::insert(const std::pair<const unsigned long, FDProcessor*>&)".
"/opt/SUNWspro/prod/include/CC/Cstd/./map", line 489:     Where: Instantiated from non-template code.
"/opt/SUNWspro/prod/include/CC/Cstd/rw/tree.cc", line 178: Error: Formal argument s2 of type std::string & in call to ltstr::operator()(std::string &, std::string &) const is being passed const unsigned long&.
"/opt/SUNWspro/prod/include/CC/Cstd/./map", line 489:     Where: While instantiating "__rwstd::__rb_tree<unsigned long, std::pair<const unsigned long, FDProcessor*>, __rwstd::__select1st<std::pair<const unsigned long, FDProcessor*>, unsigned long>, ltstr, std::allocator<std::pair<const unsigned long, FDProcessor*>>>::insert(const std::pair<const unsigned long, FDProcessor*>&)".
"/opt/SUNWspro/prod/include/CC/Cstd/./map", line 489:     Where: Instantiated from non-template code.
"/opt/SUNWspro/prod/include/CC/Cstd/rw/tree.cc", line 195: Error: Formal argument s1 of type std::string & in call to ltstr::operator()(std::string &, std::string &) const is being passed const unsigned long&.
"/opt/SUNWspro/prod/include/CC/Cstd/./map", line 489:     Where: While instantiating "__rwstd::__rb_tree<unsigned long, std::pair<const unsigned long, FDProcessor*>, __rwstd::__select1st<std::pair<const unsigned long, FDProcessor*>, unsigned long>, ltstr, std::allocator<std::pair<const unsigned long, FDProcessor*>>>::insert(const std::pair<const unsigned long, FDProcessor*>&)".
"/opt/SUNWspro/prod/include/CC/Cstd/./map", line 489:     Where: Instantiated from non-template code.
"/opt/SUNWspro/prod/include/CC/Cstd/rw/tree.cc", line 195: Error: Formal argument s2 of type std::string & in call to ltstr::operator()(std::string &, std::string &) const is being passed const unsigned long&.
"/opt/SUNWspro/prod/include/CC/Cstd/./map", line 489:     Where: While instantiating "__rwstd::__rb_tree<unsigned long, std::pair<const unsigned long, FDProcessor*>, __rwstd::__select1st<std::pair<const unsigned long, FDProcessor*>, unsigned long>, ltstr, std::allocator<std::pair<const unsigned long, FDProcessor*>>>::insert(const std::pair<const unsigned long, FDProcessor*>&)".
"/opt/SUNWspro/prod/include/CC/Cstd/./map", line 489:     Where: Instantiated from non-template code.
4 Error(s) detected.
0
 
sriramAuthor Commented:
Please ignore my previous comments. Yes, it worked for std::multimap<long, FDProcess*>; I found a declaration error.

I indeed liked both vector and value_type solutions. From code readable perspective vector solution is perfect but I liked value_type the most.

Thanks
0
 
sriramAuthor Commented:
thanks for the quick solution
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