datagen.hpp

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#pragma once
 
#include "util/GridSearch.hpp"
#include <random>
#include <type_traits>
#include <utility>
 
 
namespace m {
 
namespace datagen {
 
template<typename T, typename Generator = std::mt19937_64>
std::vector<T> generate_uniform_distinct_numbers(const T min, const T max, const std::size_t count,
                                                 Generator &&g = Generator())
{
    static_assert(std::is_arithmetic_v<T>, "T must be an arithmetic type");
    M_insist(min <= max);
    M_insist(is_range_wide_enough<T>(min, max, count), "range [min, max] does not have count distinct values");
 
    if (count == 1) return std::vector<T>(1, min);
    std::vector<T> values = gs::LinearSpace<T>(min, max, count-1).sequence();
 
    std::shuffle(values.begin(), values.end(), std::forward<Generator>(g));
 
    return values;
}
 
}
 
}