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random utilities now allow lvalue and rvalue references

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This commit is contained in:
0xFEEDC0DE64
2021-09-05 21:23:00 +02:00
parent 56635e611d
commit 6577900552
2 changed files with 59 additions and 2 deletions
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46
src/randomutils.h
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@@ -6,7 +6,7 @@
namespace cpputils { namespace cpputils {
template<typename T, typename Trandom> template<typename T, typename Trandom>
T randomNumber(T min, T max, Trandom &&rng) T randomNumber(T min, T max, Trandom &rng)
{ {
std::uniform_int_distribution<T> dist{min, max}; std::uniform_int_distribution<T> dist{min, max};
return dist(rng); return dist(rng);
@@ -27,7 +27,28 @@ T randomNumber(T min, T max, Trandom &&rng)
//} //}
template<typename T, typename Trandom> template<typename T, typename Trandom>
T randomNumber(T max, Trandom &&rng) T randomNumber(T min, T max, Trandom &&rng)
{
std::uniform_int_distribution<T> dist{min, max};
return dist(rng);
}
//template<typename Trandom>
//float randomNumber<float, Trandom>(float min, float max, Trandom &&rng)
//{
// std::uniform_real_distribution<float> dist{min, max};
// return dist(rng);
//}
//template<typename Trandom>
//double randomNumber<double, Trandom>(double min, double max, Trandom &&rng)
//{
// std::uniform_real_distribution<double> dist{min, max};
// return dist(rng);
//}
template<typename T, typename Trandom>
T randomNumber(T max, Trandom &rng)
{ {
std::uniform_int_distribution<T> dist{{}, max}; std::uniform_int_distribution<T> dist{{}, max};
return dist(rng); return dist(rng);
@@ -47,4 +68,25 @@ T randomNumber(T max, Trandom &&rng)
// return dist(rng); // return dist(rng);
//} //}
template<typename T, typename Trandom>
T randomNumber(T max, Trandom &&rng)
{
std::uniform_int_distribution<T> dist{{}, max};
return dist(rng);
}
//template<typename Trandom>
//float randomNumber<float, Trandom>(float max, Trandom &&rng)
//{
// std::uniform_real_distribution<float> dist{{}, max};
// return dist(rng);
//}
//template<typename Trandom>
//double randomNumber<double, Trandom>(double max, Trandom &&rng)
//{
// std::uniform_real_distribution<double> dist{{}, max};
// return dist(rng);
//}
} // namespace cpputils } // namespace cpputils

15
src/strutils.h
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@@ -62,4 +62,19 @@ std::string randomString(std::size_t length, Trandom &rng)
return result; return result;
} }
template<typename Trandom>
std::string randomString(std::size_t length, Trandom &&rng)
{
constexpr const char chars[] =
"0123456789"
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz";
std::uniform_int_distribution dist{{}, std::size(chars) - 1};
std::string result(length, '\0');
std::generate_n(std::begin(result), length, [&]() { return chars[dist(rng)]; });
return result;
}
} // namespace cpputils } // namespace cpputils