Re: Sequential evaluation of lists
- To: mathgroup at smc.vnet.net
- Subject: [mg53187] Re: Sequential evaluation of lists
- From: "Ray Koopman" <koopman at sfu.ca>
- Date: Tue, 28 Dec 2004 06:30:38 -0500 (EST)
- References: <email@example.com>
- Sender: owner-wri-mathgroup at wolfram.com
Ray Koopman wrote:
> When I first started using Mathematica (v2), one of the features
> that I found rather surprising is its sequential evaluation of lists
> [...] so far I have found no exception to sequential evaluation
> and no mention of it in any documentation. Have I missed something?
Yes. In an offline message, DrBob wrote:
> In the Book, section 2.6.4, it's explained that Mathematica has a
> standard evaluation procedure:
> Evaluate the head of the expression.
> Evaluate each element in turn.
> .... other rules
> So yes, it appears that sequential evaluation is the basic rule --
> with exceptions when the Head has attributes HoldFirst or Orderless,
The standard evaluation procedure is the same now as it was in v2 --
only the section number has changed.
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