During my Software Craftsmanship Precompiler session, I heard one of the students say, “all you need is an IEnumerable to use a foreach loop”. This sparked a bit of fun when I asked Steve Smith, my co-presenter, if that was correct. He confirmed that it was, and I disagreed. Being the scientists that we are, we decided to try it and see what happened. I of course knew that duck typing in C# should allow the Foreach loop to compile without anything having the method required by the IEnumerable in
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