Quoting First Bat <rails-mailing-l...@andreas-s.net>:
>
> hello,
>
> how do i prevent someone to enter duplicate word
>
> for example,
>
>
>
> eat = ""
> data = []
>
> print "what did you eat for dinner?: "
> eat = gets.chomp
>
> data << eat
>
> so let say if they enter a food twice, it would print something like
>
> " #{eat} you already entered that"
>
> i was told to use Array#index, but i have no idea how to use it
>
eat = ""
data = {}
print "what did you eat for dinner?: "
eat = gets.chomp
if data[eat]
puts " #{eat} you already entered that"
else
data[eat] = true
end
HTH,
Jeffrey
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