From: Terry Michaels <spare@...>
Date: 2010-09-09T13:16:05+09:00
Subject: Re: Receiving array naturally?

Clifford Heath wrote:
> Terry Michaels wrote:
>>   def process_data(*strings)
>>      ...
>>   end
>> 
>> That works with the comma-separated list, because the list gets combined
>> into one array ("strings"), but if I pass in an array object, that array
>> object is not split up, but rather becomes one (Array object) element of
>> the "strings" array.
>> 
>> is there something else I'm overlooking?
> 
> You've overlooked the simplest way:
> 
> def process_data(*strings)
>   Array(strings).each do |s|
>     ...
>   end
> end

That doesn't work, because an array passed it gets treated like simply 
an element of the "strings" array:

def process_data(*strings)
  Array(strings).each do |s|
    print s.class.to_s + " " + s.to_s + " " + "\n"
  end
end

process_data("a", "b", "c")
process_data(["a", "b", "c"])

# Produces:
#
# String a
# String b
# String c
# Array abc
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