public static T SelectOne <T>(this IRng rng) where T : Enum
{
var values = _enumValues.GetOrAdd(typeof(T), k => Enum.GetValues(k));
var selection = rng.GetInt32(0, values.Length - 1);
return((T)values.GetValue(selection));
}
public static int GetInt32(this IRng rng, int minInclusive, int maxInclusive)
{
var range = Math.Abs(maxInclusive - minInclusive);
var i = rng.GetInt32(range);
return(i + minInclusive);
}
public static int GetInt32(this IRng rng, int maxInclusive)
{
var i = rng.GetInt32();
var r = i % (maxInclusive + 1);
if (r < 0)
{
r *= -1;
}
return(r);
}
public static T SelectOne <T>(this IRng rng, T[] possibilities)
{
var selection = rng.GetInt32(0, possibilities.Length - 1);
return(possibilities[selection]);
}
public static decimal GetDecimal(this IRng rng) => new decimal(rng.GetInt32(), rng.GetInt32(), rng.GetInt32(), rng.GetBit(), 2);