tests/gtest-etree-14.cs

   1 using System;
   2 using System.Collections.Generic;
   3 using System.Linq;
   4 using System.Linq.Expressions;
   5
   6 class Person
   7 {
   8         public int Age { get; set; }
   9 }
  10
  11 class Repro
  12 {
  13         static int Main ()
  14         {
  15                 var persons = GetPersons (new [] { new Person { Age = 25 }, new Person { Age = 21 } }, 25);
  16                 return persons.Count () - 1;
  17         }
  18
  19         static IEnumerable<T> GetPersons<T> (IEnumerable<T> persons, int age) where T : Person
  20         {
  21                 foreach (var person in persons)
  22                         if (Test (person, p => p.Age == age))
  23                                 yield return person;
  24         }
  25
  26         static bool Test<T> (T t, Expression<Func<T, bool>> predicate)
  27         {
  28                 return predicate.Compile () (t);
  29         }
  30 }