find or remove in list, stl, doesnt work, please help.

[Edward01]

Write your question here.
Hey, i made a list of classes using the stl. but when i am trying remove an element or find an elevent i'm getting this error: error C2678: binary '==' : no operator found which takes a left-hand operand of type 'Song' (or there is no acceptable conversion.

#ifndef Song_h
#define song_h
#include<iostream>
#include<string>
#include <queue>
using namespace std;

enum eSection{ INTRO, VERSE, CHORUS, TRANSITION };
enum eSectionDurationInSeconds{ INTOR_DUR = 5, VERSE_DUR = 10, CHORUS_DUR = 20, TRANSITION_DUR = 5 };

class Song{
private:
	string m_songName; // Song Name.
	string m_composerName; // Song Composer
	string m_singerName; // The singer, could be more than one.

	queue<string> m_songStructure;

public:
	Song(string songName = "Not Set Yet" , string composerName = "Not Set Yet" , string singerName = "Not Set Yet");
	~Song();
	void set(); // ?
	string getSongName();
	void addSection(const eSection sec, const eSectionDurationInSeconds iDuration);
	const void playSong() const;// Function Plays the Song.
	
	const double getSongLenghtInMinutes() const;


};

#endif 

none of this work:

bool Playlist::isSongInPlaylist( const Song& song ){
 list<Song>::iterator iter = find(m_songList.begin(),m_songList.end(),song);
}

void Playlist::removeSongFromPlaylist(const Song& song){
	m_songList.remove(song);
}

[seven50]

http://msdn.microsoft.com/en-us/library/ys0bw32s.aspx

[vlad from moscow]

You did not define operator == for class Song. So the compiler does not know how to compare objects of type Song.