Re: [Boost-users] [lambda] Defining a predicate for std::find_if if the key to a std::map is std::pair

Subject: Re: [Boost-users] [lambda] Defining a predicate for std::find_if if the key to a std::map is std::pair
From: Nat Goodspeed (nat_at_[hidden])
Date: 2009-09-24 15:01:17

Anthony Foglia wrote:

> Nat Goodspeed wrote:

>> Forgive me if this is a stupid question, but if you don't want to 
>> compare the int, why is it part of the key at all?

> He wants to compare the int upon retrieval, but it doesn't matter for 
> insertion.  But I think he'd be better off getting the map to only care 
> about the string.
> 
> Or, even easier, make the key just the string and the value a pair of 
> the int and the vector of classA:
> 
> typedef map<string, pair<int, vector<classA> > cMap;

Yes, that's what I was thinking: migrate the int from the key to the 
mapped_type.