Question

I have the following code that produces a compilation issue in my C# generic function:

static void solve () {
    int[] vals = RA<int>();
}

and my RA function:

static T[] RA<T> () {
    return Console.ReadLine ().Split ().Select (v => T.Parse (v)).ToArray ();
}

Giving me the following error:

Espression denotes a 'type parameter', 
where a 'variable', 'value' or 'type' was expected

Can the community assist me in debugging or understanding this issue and resolving it?

Answer 1

The compiler don’t know a result type in compilation time and can’t link Parse call.

You should use Convert class to avoid compilation issue and limit generic type attribute

static T[] RA<T>()
    where T : IConvertible
{
    return RL().Split().Select(v => (T)Convert.ChangeType(v, typeof(T))).ToArray();
}