x = "text"
last_char = x[x.length-1, x.length-1]

   "test"[-1, 1] # => "t"

Hope that helps.

[tiger-ppc.gfbm:246]bystr> irb
irb(main):001:0> s = "abc"
=> "abc"
irb(main):002:0> s[-1]
=> 99
irb(main):003:0> s[-1].chr
=> "c"

irb(main):004:0>

"abc".slice(-1,1)

"abc".slice(-1).chr

"abc"[ /.$/ ]

"abc".reverse[0,1]

"abc".split('').pop

class String
  def last
    self[-1,1]
  end
end

x[-1,1] looks far more readable than x[x.length-1, x.length-1]

Thanks a lot :)