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: Ryan McConnehey (mccorywork_at_[hidden])
Date: 2009-09-24 12:11:57

> std::pair<cMap::iterator, bool> inserted =
>     myMap.insert(cMap::value_type(cMap::key_type(givenName, properInt),
>                                   cmap::mapped_type()));
> if (! inserted.second)  // oh, it already existed?
> {
>     ...
> }

Since I'm using both givenName and properInt as a key, the insert will 
never return false for just a duplicate of givenName.  Also, if the 
insert did return false then it means a good value at that map key has 
been replaced.  The reason I'm trying to catch this duplication is 
because "last value entered wins" doesn't meet the requirement I was given.

Ryan