From: Clifford Heath <no@...>
Date: 2008-03-12T12:00:43+09:00
Subject: Re: setting local variables via eval

Rick DeNatale wrote:
> On 3/11/08, Joel VanderWerf <vjoel@path.berkeley.edu> wrote:
>> Rick DeNatale wrote:
>>  > On 3/11/08, ara howard <ara.t.howard@gmail.com> wrote:
>> Not quite.
>>
>>    view = View.new '<body> #{ x + y } #{locals} </body>'
>>    puts view.render(:x => 40, :y => 2)  # ==> <body> 42 x40y2 </body>
> 
> Not on my machine:
> 
> RubyMate r8136 running Ruby r1.8.6
> (/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby)
>>>> untitled
> 
> <body> 42 </body>
> Program exited.

I don't know what's different about your environment, Rick, but the
point I made elsewhere in this thread is that the version that both
you and Robert offered doesn't present a clean scope for the added
locals, it just re-uses the local scope of "render". That means you
can both expand and clobber render's internal variables, as I showed.

Clifford Heath.