what does g++ want from my code

[Erez D]

On Wed, Aug 25, 2010 at 12:08 PM, Elazar Leibovich <elazarl at gmail.com>wrote:

> template <class a, class b>
>
> class c
>
> {
>
>       private:
>
>               b defaultVal;
>
>       public:
>
>               std::map<a,b> mymap;
>
>              const b &func(a idx)
>
>              {
>
>                  typename std::map<a,b>::iterator it(mymap.find(idx));
>
>                      if (it!=mymap.end())
>
>                              return it->second;
>
>                      else
>
>                              return defaultVal;
>
>              }
>
> };
>
>
> The compiler is not sure std::map<a,b>::iterator is a typename or a value.
>
how do i sove that ? can you give a solution ?

>
> 2010/8/25 Erez D <erez0001 at gmail.com>
>
>> hi
>>
>>
>> i am compiling the following code:
>>
>> 1:#include <map>
>> 2:
>> 3:template <class a, class b>
>> 4:class c
>> 5:{
>> 6:      private:
>> 7:              b defaultVal;
>> 8:      public:
>> 9:              std::map<a,b> mymap;
>> 10:             const b &func(a idx)
>> 11:             {
>> 12:                     std::map<a,b>::iterator it=mymap.find(a);
>> 13:                     if (it!=mymap.end())
>> 14:                             return it->second;
>> 15:                     else
>> 16:                             return defaultVal;
>> 17:             }
>> 18:};
>> ...
>> ...
>>
>> compiling it (under cygwin) , i get the following:
>>
>> $ g++ -c -o kaka.o kaka.cpp
>> kaka.cpp: In member function 'const b& c<a, b>::func(a)':
>> kaka.cpp:12: error: expected `;' before 'it'
>> kaka.cpp:13: error: 'it' was not declared in this scope
>>
>>
>> what's wrong ?
>>
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>>
>>
>
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