Function make_function

src/behavior_oracle.cpp:20–24

Just a little helper to make populating predicate_map slightly less gross.

// Just a little helper to make populating predicate_map slightly less gross.
static std::function < status_t( const oracle_t *, const std::string & ) >
make_function( status_t ( character_oracle_t::* fun )( const std::string & ) const )
{
    return static_cast<status_t ( oracle_t::* )( const std::string & ) const>( fun );
}

static std::function < status_t( const oracle_t *, const std::string & ) >
make_function( status_t ( monster_oracle_t::* fun )( const std::string & ) const )