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using System.Collections.Generic;
delegate TD Func<TD>();
delegate TR Func<TA,TR>(TA arg);
public class C
{
static IEnumerable<T> Test<T> (T t)
{
return null;
}
static IEnumerable<T> Test<T> (Func<T> f)
{
return null;
}
static IEnumerable<T> Test2<T> (Func<T, T> f)
{
return null;
}
public static void Main ()
{
IEnumerable<int> ie = Test (1);
IEnumerable<string> se;
se = Test (() => "a");
se = Test (delegate () { return "a"; });
se = Test2 ((string s) => "s");
}
}
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