[Boost-users] Random Distribution

From: Kevin Martin (kev82_at_[hidden])
Date: 2008-05-03 08:12:06

I'm looking for a random distribution which allows me to generate  
enums with specified probabilities.

As a simple example I could have:

//The enum.
typedef enum {vt_car, vt_bus, vt_walk, vt_cycle} vehicle_types;

//What I want to generate and the associated probabilities.
boost::array<vehicle_types, 4> items = {vt_car, vt_bus, vt_walk,  
vt_cycle};
boost::array<double, 4> probabilities = {0.1, 0.2, 0.3, 0.4}

//The random distribution.
EnumGenerator eg(items, probabilities);

//Generate some vehicles
boost::mt19937 rng;
eg(rng);
eg(rng);
eg(rng);

I can't seem to find anything that does this. Is it there and I'm just  
missing it, or am I the only person who needs to do this?

Thanks,
Kevin Martin