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Re: The fundamental concept of continuations


From: George Neuner
Subject: Re: The fundamental concept of continuations
Date: Mon, 15 Oct 2007 00:17:40 -0400

On Mon, 15 Oct 2007 11:56:39 +1300, Lawrence D'Oliveiro
<address@hidden> wrote:

>In message <address@hidden>, Barb Knox wrote:
>
>> Instead of function A returning to its caller, the
>> caller provides an additional argument (the "continuation") which is a
>> function B to be called by A with A's result(s).
>
>That's just a callback. I've been doing that in C code (and other
>similar-level languages) for years.

Callbacks are a form of continuation.  However, general continuations
such as those in Scheme, carry with them their execution context.
This allows them to used directly for things like user-space
threading.

George
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