class String

str.from(1).to(-2) #=> "ell"
str.from(0).to(-1) #=> "hello"
str = "hello"

You can mix it with +to+ method and do fun things like:

str.from(-2) #=> "lo"
str.from(3) #=> "lo"
str.from(0) #=> "hello"
str = "hello"

If the position is negative, it is counted from the end of the string.
Returns a substring from the given position to the end of the string.

def from(position)
  self[position..-1]
end