def exact_length?(value, length)
			has_exact_length = coerce_bool (value.length == length)
			unless has_exact_length
				@error = "Error, expected value to have exactly #{length} characters, got: #{value.length}"
			end
			has_exact_length
		end
def exact_length?(value, length)
			has_exact_length = coerce_bool (value.length == length)
			unless has_exact_length
				@error = "Error, expected value to have exactly #{length} characters, got: #{value.length}"
			end
			has_exact_length
		end
Returns +true+ if the value has exactly the specified length

 @param value [String] the value
 @param length [Integer] the length
 @return [Boolean]