std::unordered_map

[Alex]

Hi,

Does GraphLab support a user-defined vertex_type which has std::unordered_map as a member? Do i need to compile this in a different way?

Thanks,

Alex 

[Joseph Gonzalez]

Hi Alex,

This is supported in the GraphLab API (and pretty common).  However, you will need to make sure you implement the load and save functions as in:

http://code.google.com/p/graphlabapi/source/browse/toolkits/graphical_models/lbp_structured_prediction.cpp#186

Joey

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[Alex]

Hi,

I get this error when I use std::unordered_map.

/usr/include/c++/4.6/bits/c++0x_warning.h:32:2: error: #error This file requires compiler and library support for the upcoming ISO C++ standard, C++0x. This support is currently experimental, and must be enabled with the -std=c++0x or -std=gnu++0x compiler options

How do I overcome this error?

Thanks,

Alex

[Chidananda Sridhar]

Hi,

I am getting this error too. How do we enable the -std=c++0x or -std=gnu++0x compiler options?

Thanks,

Chidananda

[Yucheng Low]

Hi,

You can turn it on with ./configure --c++11

However, we have not tested this exhaustively.

A suitable alternative is to just use the boost unordered_map which does the same thing.

#include <boost/unordered_map>

http://www.boost.org/doc/libs/1_53_0/doc/html/unordered.html

We obtain all of boost as a dependency, so you can just use it directly.

Yucheng