From: Ralph Shnelvar <ralphs@...32.com>
Date: 2012-02-21T10:32:12+09:00
Subject: Re: Accessing a local variable through a symbol

Darryl,

Monday, February 20, 2012, 6:13:46 PM, you wrote:

DLP> On Mon, Feb 20, 2012 at 8:03 PM, Ralph Shnelvar <ralphs@dos32.com> wrote:
>> Darryl,
>>
>> Monday, February 20, 2012, 1:57:53 PM, you wrote:
>>
>> DLP> On Mon, Feb 20, 2012 at 3:49 PM, Ralph Shnelvar <ralphs@dos32.com> wrote:
>>>> local_variables delivers a list of symbols of the local variables. �I'm trying to access the underlying values associated with that list.
>>
>> DLP> def foo
>> DLP> � x = 5
>> DLP> � y = 9
>> DLP> � z = 9
>>
>> DLP> � local_variables.each { |varname| puts "#{varname} evaluates to
>> DLP> #{eval varname}"}
>> DLP> end
>>
>> DLP> Try that.
>>
>> I get
>> �in `eval': can't convert Symbol into String (TypeError)

DLP> I didn't use any symbols. Please post the exact code you're using.

You implicitly used symbols because local_variables produces an array of symbols.

C:\Users\Ralph>irb
irb(main):001:0> def bar
irb(main):002:1>   x = 5
irb(main):003:1>   y = 9
irb(main):004:1>   z = 9
irb(main):005:1>
irb(main):006:1*   p local_variables
irb(main):007:1> end
=> nil
irb(main):008:0> bar
[:x, :y, :z]
=> [:x, :y, :z]



-- 
Best regards,
 Ralph                            mailto:ralphs@dos32.com