std::find

[Peter Meier]

Hello,

I have a question. I have the following construct:

std::vector < std::vector < std::vector< AsMarkerMatchMa trix >> >
m_matchMatrices ;

If I run a std::find on that I sometimes get the iterator to be some strange
number like -124224256, although I know there should not be a match. Usually
the iterator points to NULL, if there is no match.

Anybody experienced the problem? MS c++ 7.1

Also I get an "could not deduce template argument" error, if I do not
implement the == operator, although the parent class implements it.

Greetings, Peter

[Mike Wahler]

Re: std::find


"Peter Meier" <peter.meier@ ar-solutions.de> wrote in message
news:blgkto$sv5 $1@wsc10.lrz-muenchen.de...[color=blue]
> Hello,
>
> I have a question. I have the following construct:
>
> std::vector < std::vector < std::vector< AsMarkerMatchMa trix >> >
> m_matchMatrices ;
>
> If I run a std::find on that I sometimes get the iterator to be some[/color]
strange[color=blue]
> number like -124224256, although I know there should not be a match.[/color]
Usually[color=blue]
> the iterator points to NULL, if there is no match.[/color]

Show us a small compilable example that gives the
problem behavior.
[color=blue]
> Anybody experienced the problem? MS c++ 7.1
>
> Also I get an "could not deduce template argument" error, if I do not
> implement the == operator, although the parent class implements it.[/color]

Show a small example that gives this error.

My crystal ball rolled down the driveway and got hit by a car.

-Mike

[Peter Meier]

Re: std::find

Found the problem: I should compare with vector.end() to find out, if there
was a match, but for the second question I did not find an answer.

Greetings, Peter
[color=blue]
> Hello,
>
> I have a question. I have the following construct:
>
> std::vector < std::vector < std::vector< AsMarkerMatchMa trix >> >
> m_matchMatrices ;
>
> If I run a std::find on that I sometimes get the iterator to be some[/color]
strange[color=blue]
> number like -124224256, although I know there should not be a match.[/color]
Usually[color=blue]
> the iterator points to NULL, if there is no match.
>
> Anybody experienced the problem? MS c++ 7.1
>
> Also I get an "could not deduce template argument" error, if I do not
> implement the == operator, although the parent class implements it.
>
> Greetings, Peter
>
>
>
>[/color]

[Mike Wahler]

Re: std::find

"Peter Meier" <peter.meier@ ar-solutions.de> wrote in message
news:blgqga$2jf $1@wsc10.lrz-muenchen.de...[color=blue]
> Found the problem: I should compare with vector.end() to find out, if[/color]
there[color=blue]
> was a match, but for the second question I did not find an answer.[/color]

Please don't top-post.

We cannot answer your question until you provide
context (code).

-Mike