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Lindsey Kuper

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The littlest Schemer [Jan. 27th, 2009|08:25 am]
Lindsey Kuper
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One of my classmates: *writing some code on the board* Okay, so I thought that this k here was a continuation, but Dan says that it isn't.
Dan: No, it's not a continuation. It's a context.
Lindsey: What's a context?
Dan: *draws a diagram on the board*
Lindsey: Well, that looks like a piece of code with a hole in it.
Everyone: Yes.
Lindsey: But that's how I think of continuations!
Everyone: No. Well...um.
Lindsey: Okay, um. What is the relationship between context and continuation?
Dan: Sounds like you have your thesis topic!

*sigh*

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Comments:
[User Picture]From: lindseykuper
2009-03-15 02:52 pm (UTC)
I think I was on the wrong track with inside-out objects. "Inside-out" is useful as a way to explain what happens to a program when we write it in continuation-passing style. But as for continuation vs. context, Will finally explained it to me this way: contexts are a static, syntactic notion, whereas continuations are a dynamic, run-time notion.

Moreover, it turns out that there's actually debate about what is really a continuation and what isn't. Dan wasn't entirely kidding about the thesis topic thing. So I don't feel so bad about being confused!
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