Many thanks Joaquin: I downloaded the attached file, it works just fine. * Are you using some using directive? Which one? The code it's included in a namespace declaration namespace emedia { namespace lumiere { /* The sample code goes in here */ } } ---------------------- apart of that there is no added using declaration (except using boost::multi_index). * Are you doing some funny thing with the "mem_fun" identifier inside "Item.h"? No * What happens if you fully qualify mem_fun, i.e. if you write ::boost::multi_index::mem_fun? Well, when I tried this option it worked! It looks like gcc missed the "using boost::multi_index" declaration. In order to gain experience: If you have any idea what was the problem it will be appreciated. Thanks again. René On 7/28/06, JOAQUIN LOPEZ MU?Z wrote:

Rene Tarantino wrote:

...

Hi :

I'm just starting to use boost utility library and it seems very promising. I am trying to define a new multi_index type and gcc it's giving me error messages.

First I properly added the includes for boost::multi_index :

#include #include #include

then the includes for "Item" and "ObjectId" declarations:

#include "Item.h"

following that appears this:

typedef multi_index_container< Item*, indexed_by< hashed_unique > > > ItemsContainer;

When I try to compile this code gcc reports the following errors:

error: 'mem_fun' was not declared in this scope error: template argument 1 is invalid error: type/value mismatch at argument 3 in template parameter list for 'template struct boost::multi_index::hashed_unique' error: expected a type, got '&emedia::lumiere::Item::getId' error: template argument 1 is invalid error: template argument 2 is invalid error: expected unqualified-id before '>' token

It seems that I'm forgetting something. It's very strange because all ready compilled this code in another project but I can't find any difference with this one.

Hello René,

I really can't reproduce the problem you describe. The attached file tries to mimic your scenario (with a dummy Item definition) and here everything works OK. Could you please try it in your environment?

I guess the problem is not in what you describe, but in what you don't, I mean, sorrounding details that you're taking for granted. Things to check:

* Are you using some using directive? Which one? * Are you doing some funny thing with the "mem_fun" identifier inside "Item.h"? * What happens if you fully qualify mem_fun, i.e. if you write ::boost::multi_index::mem_fun?

I hope some of the above rings a bell for you. Please report back. Best,

Joaquín M López Muñoz Telefónica, Investigación y Desarrollo

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