Re: container class for using a struct in std::vector<>
On Jan 12, 1:18 pm, "Alex Blekhman" <x...@oohay.moc> wrote:
"PaulH" wrote:
I have a std::vector< ICMP_ECHO_REPLY > container that I'd
like to be
able to do such wonderful STL operations as max_element(),
accumulate(), greater_equal(), etc... So, I decided I
would create a
class to contain that information and overload the
necessary operators.
The idea is that I should be able to do something like
this:
std::vector< ICMP_ECHO_REPLY > container;
ICMP_ECHO_REPLY reply;
//...
container.push_back( reply );
//...
std::vector< ICMP_ECHO_REPLY >::const_iterator itMax =
max_element(
container.begin() container.end() );
Thus far, I've got something like the class below, but I
the error:
error C2678: binary '<' : no operator found which takes a
left-hand
operand of type 'const CEchoReply' (or there is no
acceptable
conversion)
So, first, I'd like to know if there is a better way of
doing this.
Second, what is it I'm doing wrong here?
Thanks,
PaulH
class CEchoReply
{
public:
ICMP_ECHO_REPLY _reply;
CEchoReply()
{
ZeroMemory( &_reply, sizeof( ICMP_ECHO_REPLY ) );
};
CEchoReply( const ICMP_ECHO_REPLY& reply )
{
memcpy( &_reply, &reply, sizeof(
ICMP_ECHO_REPLY ) );
};
~CEchoReply()
{
};
operator ICMP_ECHO_REPLY() const { return _reply; };
bool operator < ( const ICMP_ECHO_REPLY& lhs )
{
return lhs.RoundTripTime < _reply.RoundTripTime;
};
- Hide quoted text -
- Show quoted text -
};In addition to Victor's reply, you could inherit CEchoReply
from ICMP_ECHO_REPLY struct. Then you won't need `operator
ICMP_ECHO_REPLY' and `_reply' member anymore. Also, avoid
names starting from underscore ('_') in your programs. Such
names are reserved by C++ Standard for the implementation.
I always love a method that uses less code! Thanks!
-PaulH
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