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c# Programming Glossary: turtleC# : Why doesn't 'ref' and 'out' support polymorphism? http://stackoverflow.com/questions/1207144/c-sharp-why-doesnt-ref-and-out-support-polymorphism suppose you have classes Animal Mammal Reptile Giraffe Turtle and Tiger with the obvious subclassing relationships. Now suppose.. of type Animal to M No. That variable could contain a Turtle but M will assume that it contains only Mammals. A Turtle is.. Turtle but M will assume that it contains only Mammals. A Turtle is not a Mammal. Conclusion 1 Ref parameters cannot be made..
Operation could destabilize the runtime? http://stackoverflow.com/questions/378895/operation-could-destabilize-the-runtime that is larger than ISomeTable i.e. you could put a Turtle into an Animals IEnumerable when that IEnumerable can only contain..
Why was IEnumerable<T> made covariant in C# 4? http://stackoverflow.com/questions/6732299/why-was-ienumerablet-made-covariant-in-c-sharp-4 if x is IEnumerable Animal ABC else if x is IEnumerable Turtle DEF When IE T is not covariant this code chooses either ABC.. chooses DEF anymore. Or class B public void M IEnumerable Turtle turtles class D B public void M IEnumerable Animal animals Before.. type match is exact or not. Or class Weird IEnumerable Turtle IEnumerable Banana ... class B public void M IEnumerable Banana..
http://stackoverflow.com/questions/7664790/why-does-the-c-sharp-compiler-complain-that-types-may-unify-when-they-derive-f It is bizarre for example to have class C IEnumerable Turtle IEnumerable Giraffe what is C that it is both a sequence of..
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