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Re: newbie question on functions

In article <cm4r7j$6lm$1 at>,
 David Bailey <dave at> wrote:

> Yes, of course you can save the result of a calculation. For example:
> result=intensity[4.,5.]

For the original "newbie" poster:

For newbies, or less expert users like me, it's easy to think that 
something like

    AppendTo[list, expr]

is a "command" that will do what it says: append expr to list.  Takes a 
few bad experiences to realize that you actually have to say

    list = AppendTo[list,expr]

Same general principle applies more broadly.

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