public FormatterResult <double> GetDouble(string input)
{
FormatterResult <double> res = new FormatterResult <double>();
FormatterError formatterError = new FormatterError();
if (input == null)
{
res.Errors.Add(formatterError.Create("String is null"));
return(res);
}
if (input.Length == 0)
{
res.Errors.Add(formatterError.Create("String is empty"));
return(res);
}
double val = 0;
if (!double.TryParse(input, out val))
{
res.Errors.Add(formatterError.Create("Cant transform the string"));
}
res.Value = val;
return(res);
}
private static double GetDouble()
{
FormatterResult <double> res = null;
StringFormatter stringFormatter = new StringFormatter();
do
{
string input = Console.ReadLine();
res = stringFormatter.GetDouble(input);
if (res.IsValid)
{
Console.WriteLine("All right");
}
else
{
Console.WriteLine("Errors:");
string s = string.Join("\n", res.Errors.Select(str => str.ErrorMessage));
Console.WriteLine(s);
}
}while (!res.IsValid);
return(res.Value.Value);
}
