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POC#: Interface with Either Number or DateTime
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  1. POC#: Interface with Either Number or DateTime
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    copied!<p>My problem can be simplified to a List&lt;> with X and Y coordinates that I'd like to group into an interface or abstract class. I then have a bunch of other functions that take this abstract class as an argument. The caveat to this is that the X element is either of a numerical or is a DateTime. Here's some sample code to illustrate what I'm trying to do:</p> <pre><code>//C# 4.0 abstract class Element : Group&lt;DateTime, double&gt; { public DateTime X {get; set;} public double Y {get; set;} } public interface Group&lt;T, U&gt; { public T X {get; set;} public U Y {get; set;} } void OtherObject.Do(List&lt;Group&lt;DateTime, double&gt;&gt; elm) { double[] X = 0; for (int i = 0; i &lt; elm.Count; i++) { if (elm[i].GetType() == typeof(DateTime)) { X[i] = ((DateTime)elm[i].X).TOADate(); { else { X[i] = elm.X; } } //Other stuff } static Main() { List&lt;Element&gt; list = FactoryCreate(); OtherObject obj = new OtherObject(); obj.Do(list); } </code></pre> <p>I'd like to be able to specify the <code>List&lt;Group&lt;DateTime, double&gt;&gt;</code> argument to <code>Do()</code> without specifying that the generic types. I'd just like to be able to do <code>Do(List&lt;Group&gt; lst)</code>. </p> <p>I <em>could</em> just eliminate the generic type parameters and use the dynamic data type in Group but I don't feel like thats the best way. </p> <p>Is there an established pattern to deal with this issue? I'm 100% open to suggestions as to the correct way to model this data structure/class.</p>
 

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