public static ulong Digits_To_Base10_Unsigned(ReadOnlySpan <char> digits)
{
if (digits == null || digits.IsEmpty)
{
return(0);
}
if (!StringCommon.ContainsOnly(digits, ASCII_DIGITS))
{
throw new ArgumentOutOfRangeException(ParserErrors.INVALID_CONTAINS_NON_DIGIT_CHARS);
}
Contract.EndContractBlock();
ulong Integer = 0;
var span = digits;
ulong power = 1;
for (int i = digits.Length - 1; i >= 0; i--)
{
Integer += power * (ulong)Ascii_Digit_To_Value(span[i]);
power *= 10;
}
return(Integer);
}
public void ContainsOnlyTest(string Input, string Match, bool Expected)
{
Assert.Equal(Expected, StringCommon.ContainsOnly(Input, Match));
}
