vector of vector of SystemC objects

Hi all,

I tried without succes to replace a 2D array of sc_signal<bool> by a vector<vector<sc_signal> >

After deep investigations I found the sc_vector class. What is the purpose of SystemC sc_vector class ? What are the missing points in SystemC classe for not being able to use STL vector class to make containers of sc_signal for example ?

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Manu