finding an object in a STL list

[hooshdar3]

Hello.I can search for an item with a specific value thus:

for( list<Evaluation>::iterator it = website->results.begin();it != website->results.end();++it )  
           if( (strcmp( id_article,it->getArticleID() ) == 0) && (strcmp( id_arbiter, it->getArbiterID() ) == 0) )
              if( strcmp( userType, "arbiter" ) == 0 )
                  it->edit();

NOTE:Evaluation is a class.results is a member of website.edit() is a member function of class Evaluation.the code compiles



but when do I know if it is not in the list?

[Galik]

You could break; when you find it and test if(it == website->results.end()) to see if you reached the end or not.

for( list<Evaluation>::iterator it = website->results.begin();it != website->results.end();++it )  
    if( (strcmp( id_article,it->getArticleID() ) == 0) && (strcmp( id_arbiter, it->getArbiterID() ) == 0) )
        if( strcmp( userType, "arbiter" ) == 0 )
        {
            it->edit();
            break;
        }
if(it == website->results.end())
{
    // not in the list
}