Code Correction: reduce

[Drew Verlee]

The book seems to claim that reduce will through an exception if the collection its passed only has one argument. This doesn't seem to be the case. As an example:

(reduce (fn [x y] (+ x y)) [1])
=> 1

This seems to work just fine.

The implication is from this text

Typically, when calling reduce we pass in a 2-arity function, like so:

(reduce (fn [x y] (+ x y)) numbers)

However, if numbers has zero arguments in it, reduce will invoke our function with zero arguments. If numbers has one argument in it, reduce will invoke our function with just the first element. In both cases, this will throw an exception. 

[Zach Tellman]

Yes, this is incorrect. I fixed this about a week ago, but it's been waiting on some other changes before I push it out. Thanks for the report.

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