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p73's topic is "6 Apply and map: applying functions to lists"

In part it says:

Since we're holding the data in a symbol called data, we could try this:

(add data)
value expected in function add : data

but no, this doesn't work, because add wants numbers to add, and neither does this:

(add data)
value expected in function add : data


The two examples above seem identical to me. What did I miss?
--
dukester

You didn't miss anything - but I missed out an apostrophe in the second example, showing that not evaluating the list didn't work either...

Actually I spotted that error the other day, while doing some proofreading (that HTML version, you know...). :-)

Thanks Dukester!

cormullion wrote:You didn't miss anything - but I missed out an apostrophe in the second example, showing that not evaluating the list didn't work either...

Actually I spotted that error the other day, while doing some proofreading (that HTML version, you know...). :-)

Thanks Dukester!

Sure! I should have guessed!! Thanks...