How do I create a set with std::pair thats sorted based on the ::second pair member using bind

Posted by Stone Free on Stack Overflow See other posts from Stack Overflow or by Stone Free
Published on 2010-06-02T13:40:23Z Indexed on 2010/06/02 13:44 UTC
Read the original article Hit count: 191

Filed under:

c++

|

boost

|

stl

|

predicate

|

pair

I know I could use the following:

template <typename Pair> 
struct ComparePairThroughSecond : public std::unary_function<Pair, bool>
{ 
    bool operator ()(const Pair& p1, const Pair& p2) const
    {  
        return p1.second < p2.second; 
    } 
};

std::set<std::pair<int, long>, ComparePairThroughSecond> somevar;

but wondered if it could be done with boost::bind

© Stack Overflow or respective owner

Related posts about c++

Which C++ book shold I get between "C++ Primer" vs "C++ Primer Plus"

as seen on Stack Overflow - Search for 'Stack Overflow'
I want to learn C++ by using Vim and MinGW as compiler. I'm interesting at "C++ Primer (4th Edition)" and "C++ Primer Plus (5th Edition)" but I don't know how about it different. It has no book store that I can review those books, so I want to know, what is the different between those book and which… >>> More
C++ : C++ Primer (Stanley Lipmann) or The C++ programming language (special edition)

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a Computer Science degree (long2 time ago) .. I do know Java OOP but i am now trying to pick up C++. I do have C and of course data structure using C or pascal. I have started reading Bjarne Stroustrup book (The C++ Programming Language - Special Edition) but find it extremely difficult esp… >>> More
I need help on my C++ assignment using MS Visual C++

as seen on Stack Overflow - Search for 'Stack Overflow'
Ok, so I don't want you to do my homework for me, but I'm a little lost with this final assignment and need all the help I can get. Learning about programming is tough enough, but doing it online is next to impossible for me... Now, to get to the program, I am going to paste what I have so far. This… >>> More
Managed c++ std::string not accessible in unmanaged c++

as seen on Stack Overflow - Search for 'Stack Overflow'
In unmanaged c++ dll i have a function which takes constant std::string as argument Prototype : void read ( const std::string &imageSpec_ ) I call this function from managed c++ dll by passing a std::string. When i debug the unmanaged c++ code the parameter imageSpec_ shows the value correctly… >>> More
The Definitive C++ Book Guide and List

as seen on Stack Overflow - Search for 'Stack Overflow'
After more than a few questions about deciding on C++ books I thought we could make a better community wiki version. Providing QUALITY books and an approximate skill level. Maybe we can add a short blurb/description about each book that you have personally read / benefited from. Feel free to debate… >>> More

Related posts about boost

boost fusion: strange problem depending on number of elements on a vector

as seen on Stack Overflow - Search for 'Stack Overflow'
I am trying to use Boost::Fusion (Boost v1.42.0) in a personal project. I get an interesting error with this code: #include "boost/fusion/include/sequence.hpp" #include "boost/fusion/include/make_vector.hpp" #include "boost/fusion/include/insert.hpp" #include "boost/fusion/include/invoke_procedure… >>> More
How can I use the Boost Graph Library to lay out verticies?

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm trying to lay out vertices using the Boost Graph Library. However, I'm running into some compilation issues which I'm unsure about. Am I using the BGL in an improper manner? My code is: PositionVec position_vec(2); PositionMap position(position_vec.begin(), get(vertex_index, g)); int iterations… >>> More
Storing objects in the array

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello, I want to save boost signals objects in the map (association: signal name ? signal object). The signals signature is different, so the second type of map should be boost::any. map<string, any> mSignalAssociation; The question is how to store objects without defining type of new signal… >>> More
Problem with boost::find_format_all, boost::regex_finder and custom regex formatter (bug boost 1.42)

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a code that has been working for almost 4 years (since boost 1.33) and today I went from boost 1.36 to boost 1.42 and now I have a problem. I'm calling a custom formatter on a string to format parts of the string that match a REGEX. For instance, a string like: "abc;def:" will be changed… >>> More
build error with boost spirit grammar (boost 1.43 and g++ 4.4.1)

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm having issues getting a small spirit/qi grammar to compile. The build stack trace is fugly enought to not make any sense to me (despite some assertion_failed i could notice in there but that didn't brought much information) the input grammar header: inputGrammar.h #include <boost/config/warning_disable… >>> More