From: Bob Hutchison <hutch@...>
Date: 2007-11-10T08:19:36+09:00
Subject: Re: odd error


On 9-Nov-07, at 6:13 PM, Roger Pack wrote:

> irb(main):006:0> {}.merge {:a => 3}
> SyntaxError: compile error
> (irb):6: syntax error, unexpected tASSOC, expecting '}'
> {}.merge {:a => 3}
>
> ???
> {}.merge({:a => 3}) works, though.  Is this a grammar problem?


Ambiguity I guess.

It is taking the {:a => 3} as a block rather than as a hash argument  
(merge is defined to allow that). The parenthesis resolves the  
ambiguity.

Cheers,
Bob

----
Bob Hutchison                  -- tumblelog at http://www.recursive.ca/so/
Recursive Design Inc.          -- weblog at http://www.recursive.ca/hutch
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