From: Eric Hodel <drbrain@...7.net>
Date: 2006-02-21T04:07:51+09:00
Subject: Re: Unexpected syntax error

On Feb 19, 2006, at 4:10 PM, Daniel Harple wrote:

> $ ruby -v
> ruby 1.8.4 (2005-12-24) [powerpc-darwin8.3.0]
>
> # Example to illustrate the problem
> def foo1
>   p (1..10).method(:each)
> end
>
> def foo2()
>   p((1..10).method(:each))
> end
>
> def foo3()
>   p (1..10).method(:each)
> end
>
> foo1 # -> No error
> foo2 # -> No error
> foo3 # -> Error

Ruby thinks those are argument parentheses.  This may not be a bug.

-:11: warning: don't put space before argument parentheses
#<Method: Range#each>
#<Method: Range#each>
1..10
-:11:in `method': undefined method `each' for class  
`NilClass' (NameError)
         from -:11:in `foo3'
         from -:16
$ parse_tree_show -f
p (1..10).method(:each)
(eval):1: warning: (...) interpreted as grouped expression
[[:class,
   :Example,
   :Object,
   [:defn,
    :example,
    [:scope,
     [:block,
      [:args],
      [:fcall,
       :p,
       [:array, [:call, [:lit, 1..10], :method, [:array,  
[:lit, :each]]]]]]]]]]

-- 
Eric Hodel - drbrain@segment7.net - http://segment7.net
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