From: mortee <mortee.lists@...>
Date: 2007-10-15T09:54:32+09:00
Subject: Re: Parameter in a block is not local?

SpringFlowers AutumnMoon wrote:
> Pat Maddox wrote:
>> This seems to me along the same lines as
>>
>> a = 1
>> if true
>>   a = 10
>> end
>> p a  # => 10
>>
>> Which certainly is not surprising or unwelcome.
> 
> when compared to the following it is surprising:
> 
> a = 1
> p a
> 
> def foo(a)
>   p a
> end
> 
> for i in 1..10
>   foo(i)
> end
> 
> p a
> 
> ------------------
> 
> E:\>ruby test_iterator2.rb
> 1
> 1
> 2
> 3
> 4
> 5
> 6
> 7
> 8
> 9
> 10
> 1
> 

Yes, the def syntax specifically doesn't take the caller binding, AFAIK.
If you intend having methods access variables local to where they are
defined, just use define_method, which takes a block, with all of its
peculiarities, like taking the caller binding along with its local
variables.

mortee