[MacRuby-devel] eval() Behavior Difference Between Ruby and MacRuby

[Matt Aimonetti]

No worries at all, thanks for using MacRuby.

- Matt

On Thu, Mar 8, 2012 at 8:08 PM, Braxton Sherouse <
sherouse at email.virginia.edu> wrote:

> Thanks; that's totally it.
>
> That specific spec change is painfully clear in
> https://github.com/rubyspec/rubyspec/blob/master/core/kernel/eval_spec.rb
> (but, of course, I didn't think to look there!)
>
> Best,
> Braxton
>
> On Thu, Mar 8, 2012 at 8:47 PM, Matt Aimonetti <mattaimonetti at gmail.com>
> wrote:
> > It's actually a difference between Ruby 1.8 and 1.9, see the same code
> with
> > 1.9.3:
> >
> > $ irb
> > 1.9.3p125 :001 > eval "f=12"
> >  => 12
> > 1.9.3p125 :002 > f
> > NameError: undefined local variable or method `f' for main:Object
> > from (irb):2
> > from /Users/mattetti/.rvm/rubies/ruby-1.9.3-p125/bin/irb:16:in `<main>'
> >
> > - Matt
> >
> >
> > On Thu, Mar 8, 2012 at 7:14 PM, Braxton Sherouse
> > <sherouse at email.virginia.edu> wrote:
> >>
> >> Hello, all. I'm new to the list (and to MacRuby!), so I give my
> >> apologies in advance for any newbie indiscretions.
> >>
> >> I was working today with MacRuby as a scripting language within a
> >> Cocoa app, and found a difference between how Ruby and MacRuby's eval
> >> functions relate to their calling context.
> >>
> >> Here's a reduction:
> >>
> >> % irb --version
> >> irb 0.9.5(05/04/13)
> >>
> >> % irb
> >> >> eval("f = 12")
> >> => 12
> >> >> f
> >> => 12
> >>
> >> % macirb --version
> >> DietRB (0.6.1)
> >>
> >> % macirb
> >> irb(main):001:0> eval("f = 12")
> >> => 12
> >> irb(main):002:0> f
> >> NameError: undefined local variable or method `f' for main:TopLevel
> >>
> >>
> >> I'm sure I'm missing something super basic. I followed a number of
> >> false leads in trying to figure this out before emailing the list,
> >> including checking out the $SAFE global (0 in both cases), and
> >> constructing Bindings to the calling context (same result).
> >>
> >> Thanks in advance for your patience and your help!
> >>
> >> Best,
> >> Braxton Sherouse
> >> _______________________________________________
> >> MacRuby-devel mailing list
> >> MacRuby-devel at lists.macosforge.org
> >> http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel
> >
> >
> >
> > _______________________________________________
> > MacRuby-devel mailing list
> > MacRuby-devel at lists.macosforge.org
> > http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel
> >
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