given the following code:
string example = "1234";
long parsed_example = long.Parse(example);
Console.Writeline(parsed_example);
# => 1234
Works great.
the following example does not:
string example = "";
long parsed_example = long.Parse(example);
# [System.FormatException: Input string was not in a correct format.]
However the goal is:
string example = "";
if (example == "")
{
example = "0";
}
long parsed_example = long.Parse(example);
Console.Writeline(parsed_example);
# => 0
is there a shorter, apropriate solution? The above code would almost justify a tiny function, Id preferable have a inline solution. Maybe something such as (pseudo code):
string example = "";
long parsed_example = example ?? 0, long.Parse(example);
long parsed_example = example == "" ? 0 : long.Parse(example);
However: don't be obsessed with single-line solutions; a multi-line solution is often more readable and correct. There are no prizes for creating complex code. You may also wish to look at string.IsNullOrWhiteSpace, long.TryParse, etc. For example:
long value;
if (string.IsNullOrWhiteSpace(example))
{
// what you want to do with blank/empty values
value = 42;
}
else if (!long.TryParse(example, out value))
{
// what you want to do with non-integer values
value = 84;
}