Problem #22 - I'm tripping the alarm for 'count' but I'm not using 'count'

[Matthew Farabaugh]

#(reduce + (for [_ %1] 1)).

[Matthew Farabaugh]

I should have just included the problem here to reduce hassle for the potential user gracious enough to help me:

[Leif]

Hi, Matthew.

The problem is that 4clojure seems to macroexpand your code before checking it, and `for` is a macro that uses `count` internally.  This is a pretty subtle problem for newcomers to run into, especially since lisp macros are unlikely to be familiar.  But we have to work with the website as-is, I suppose.

Your solution should work if you rewrite it to use `map` instead of `for`.

Happy hacking,

Leif

[Matthew Farabaugh]

Hi Leif,

I'll keep what you said about macros in mind if something like this happens again. Just another learning opportunity.

Thanks,

Matt F

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[Alexey Perekhodov]

Then maybe the use of 'for' should also be restricted for this problem.