static QueryResult()
{
expressionParser.AddFunc("rand", inputs =>
{
if (inputs == null)
{
throw new ArgumentNullException(nameof(inputs));
}
if (inputs.Length != 2)
{
throw new ArgumentException("Function random should have only two input parameter.", nameof(inputs));
}
float min = (float)inputs[0];
float max = (float)inputs[1];
if (min > max)
{
throw new ArgumentException("The first parameter should be less then the second", nameof(inputs));
}
return(random.NextDouble() * (max - min) + min);
});
}