From: Rick DeNatale <rick.denatale@...>
Date: 2009-12-02T00:26:34+09:00
Subject: Re: Splat array with 1 value in Ruby 1.9 vs Ruby 1.8

On Tue, Dec 1, 2009 at 12:53 AM, Raul Parolari <raulparolari@gmail.com> wrote:
> [ Sorry for the horrible indentation. I repeat the text renouncing to
> align the expressions ]
>
> In porting some automation code from 1.8.7 to 1.9.1, I find that in ruby
> 1.8 the following worked (real code is unpacking binary strings and
> assigning variables, but I simplify for clarity):
>
>  var1  = *[ val1 ]   # => var1 = val1
>
>  var1, var2, varn = *[ val1, val2, valn ]
>
> (I know that the splat is not necessary in the second case, but this
> allowed the code to be generated in the same way, regardless of array
> size).
>
> With Ruby 1.9.1, instead, this happens:
>
>   var1  = *[ val1 ]   # => var1 = [ val1 ]  (!)
>
>   var1, var2, varn = *[ val1, val2, valn ]
>
> Of course, this can be handled by generating code that checks the array
> size. But I am curious on this behavior of splat when the array contains
> one element (I read about the features of splat in 1.9, but they seem to
> have nothing to do with this). Does anyone know if it is a bug or
> intentional?


Not sure exactly what you mean by generating the code, but could you use

var1 = val1
and
var1, var2, varn = val1, val2, valn



-- 
Rick DeNatale

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