Question

Is there a way to use stl algorithms like find() and find_if() in a container of objects? Ex.:With find() find the element whit name ‘abc’ in a vector of class Alfhabetic.

Answer 1

You can define a comparing predicate (functor). Here is a generic implementation:

struct AlphabeticNameComp {    AlphabeticNameComp( const std::string& toCompare)       : toCompare_( toCompare) { }     bool operator()( const Alphabetic& obj) const    {        return toCompare_ == obj.name();    }  private:    const std::string toCompare_; }; 

In a vector of Alphabetic elements

std::vector< Alphabetic> vect; 

you can run a search like:

std::find_if( vect.begin(), vect.end(), AlphabeticNameComp( 'abc'));