From: Robert Klemme <shortcutter@...>
Date: 2011-03-23T02:09:51+09:00
Subject: Re: summing values in a hash?

On Tue, Mar 22, 2011 at 4:31 PM, Robert Dober <robert.dober@gmail.com> wrote:
> On Tue, Mar 22, 2011 at 4:08 PM, Robert Klemme
> <shortcutter@googlemail.com> wrote:
>  jruby -e 'p( {:a=>42}.inject(0){|a,b|a+b})'
> TypeError: Array can't be coerced into Fixnum
>         + at org/jruby/RubyFixnum.java:333
>  __file__ at -e:1
>      each at org/jruby/RubyHash.java:1167
>    inject at org/jruby/RubyEnumerable.java:816
>    (root) at -e:1
>
> I recon you where coming from Hash#values, however on applying the
> code to an empy hash, where it works of course the reader could be
> missled

My code explicitly included #values so it would not be affected by the
error you posted - even for non empty Hash.  Please read what I wrote.

Cheers

robert

-- 
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