From: Soul Surf <lists@...>
Date: 2012-04-13T16:44:45+09:00
Subject: Re: How to test if array element exists?

thanks. let me change the array to make it more clear what i'm trying to
test ..

M='M'
array = [M,M,M,M]

if [array[4]].empty?
  puts 'empty'
end
if [array[4]].nil?
  puts 'nil'
end

my array has 4 elements, all of them are 'M'. array[0] is M ... to
array[3] is M ... but array[4] doesn't exist. what if statement can I
write that will tell me that array[4] doesn't exist? the two if
statements above return false.

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