Specifying constructor constraint for Generic Parameter [duplicate]

Answer 1

You can't constrain generic type constructors in this way (only to require a parameterless constructor), but you could take a delegate to do the construction:

public static IList ConvertTo(this IEnumerable list, Func constructionFunc)
{
    return list.Select(constructionFunc).ToList();
}

And use it like this:

var IList converted = someSequence.ConvertTo(a => new T(a));