Question

Here is a small snippet from a C# program to generate dictionary from file.

var _mappings = File.ReadAllLines("file.txt")
    .Select(line =>
    {
        var splitt = line.Split(new char[] { ' ' },
            StringSplitOptions.RemoveEmptyEntries);

        return new fooclass
        {
            foo = abc[0],
            foo1 = abc[1],
            foo2 = abc[2],
        };
    })
    .ToDictionary<fooclass, string>(mkey => mkey.abc[0]);

I am in a dilemma that on how to return this dictionary from the function. Returning weak types is not considered good in function, and var itself cannot be a return type.

So, what would be ideal in such a case?

Answer 1

If it’s any helpful, the following compiles.

public class SomeClass
{
    private Dictionary<char, ScoresandPercentiles> function()
    {
        var _mappings = File.ReadAllLines("file.txt").Select(line =>
            {
                var splitt = line.Split(new char[] { ' ' },
                                        StringSplitOptions.RemoveEmptyEntries);

                return new ScoresandPercentiles
                {
                    foo = splitt[0],
                    foo1 = splitt[1],
                    foo2 = splitt[2],
                };
            }).ToDictionary(mkey => mkey.foo[0]);
        return _mappings;
    }
}

internal class ScoresandPercentiles
{
    public string foo;
    public string foo1;
    public string foo2;
}