STL Map copntaining vector of structs.

[doug760]

I'm having a problem with
Itr = MMIDCache.insert(Itr, MMIDList::value_type(NMKey, MMIDStructs));

where MMIDStructs is a typedef of my vector. I've tried using the long form(non typedef) std::vector<MMIData> and I still get the error C2275: 'MMIDStructs' : illegal use of this type as an expression.

Is this even possible to do or am I just lost in the syntax?

Thanks,
Doug

[Paul McKenzie]

I'm having a problem with
Itr = MMIDCache.insert(Itr, MMIDList::value_type(NMKey, MMIDStructs));

where MMIDStructs is a typedef of my vector. I've tried using the long form(non typedef) std::vector<MMIData> and I still get the error C2275: 'MMIDStructs' : illegal use of this type as an expression.

Is this even possible to do or am I just lost in the syntax?

Thanks,
Doug

Please post a complete example that duplicates the error. Explanations in English are not as effective as seeing your actual code.

Regards,

Paul McKenzie

[Thingol]

Itr = MMIDCache.insert(Itr, MMIDList::value_type(NMKey, MMIDStructs));

Is MMIDList a map<>?
If yes, value_type is a typedef:

typedef pair<const Key, T> value_type;

so you want to use of of the pair's constructors:

    pair();
    pair(const T& x, const U& y);
    template<class V, class W>
        pair(const pair<V, W>& pr);

You can see that all constructors require values, not types, as parameters.

[Thingol]

Maybe you'll have to use make_pair.

The declaration of make_pair is:

template<class T, class U>
    pair<T, U> make_pair(const T& x, const U& y);

so you can use make_pair<NMKey, MMIDStructs>(__ the value of the NMKey__, __ the value of MMIDStructs __)