On Sep-06-2013, at 6:15 AM, Amiel Martin <[email protected]> wrote:
> I've found this useful in situations where I know I'll get a one-element
> array, and I just want the element, such as an api request that always
> returns an array even though I asked for a single result, or when I'm not
> sure I'll get an array or single element (the same situation as Array.wrap
> except I want the single element of an array containing that element).
I've been on a project where we had added a method something like the following
class Array
def only_element
raise 'array has too many elements' if length > 1
first
end
end
and so we used to get the only element out of arrays that way.
Having an array in which you are sure there is only a single element is
something that many would call a smell.
However, I think this is off topic for Rails core now.
--
Tejas Dinkar
http://www.nilenso.com
Nilenso Software (formerly C42 Engineering)
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