graphlab::OpPlusEq< T > Class Template Reference

Concept checks if a type T supports operator+=. More...

#include <graphlab/vertex_program/op_plus_eq_concept.hpp>

List of all members.

Public Member Functions
	BOOST_CONCEPT_USAGE (OpPlusEq)

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Detailed Description

template<typename T>
class graphlab::OpPlusEq< T >

Concept checks if a type T supports operator+=.

This is a concept checking class for boost::concept and can be used to enforce that a type T is "additive." In particular many types in GraphLab (e.g., messages, gather_type, as well as aggregation types) must support operator+=. To achieve this the class should implement:

     class gather_type {
       int member1;
     public:
       gather_type& operator+=(const gather_type& other) {
         member1 += other.member1;
         return *this;
       } // end of operator+=
     };

Template Parameters:

T	The type to test for additivity

Definition at line 59 of file op_plus_eq_concept.hpp.

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The documentation for this class was generated from the following file:

• graphlab/vertex_program/op_plus_eq_concept.hpp