From: Mike Gold <mike.gold.4433@...>
Date: 2009-01-12T08:05:05+09:00
Subject: Re: functional programming

Mike Gold wrote:
> 
> By the way, since locals are determined at parse time, I don't see any
> particular reason why this cannot work:
> 
>   bisect = lambda { |x, y| (x + y)/2.0 }
>   # ...
>   bisect(5, 6)
> 
> Whether or not that _should_ work is a different story.  The pro is
> that I can swap lambdas and methods without changing syntax.  The con
> is, at least, that the meaning of existing code could change (when a
> bisect method already exists).

I see this is a bad idea due to the cases where the lambda is not a
local variable.

  [lambda { |x, y| (x + y)/2.0 }].first(5, 6)

Since the rule couldn't apply here, the special-case exception for a
local lambda would be silly.
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