Multiple Inequalities in Ruby

Question

Complete ruby noob.

I have a value which I want to check against several numbers (1,4,7) and if it equals any of them, return false.

right now I'm using:

if $my_variable_class[1] != 1 && $my_variable_class[1] != 4 && $my_variable_class[1] != 7

I've got a shit-ton of numbers to check for inequality against. Is there a more efficient way to handle this?

Are you sure you want to be using a global variable with the `$`? It's not exactly considered best-practice. — Jakub Hampl, Mar 10 '11 at 09:26
It's actually as part of a class. Edited code example to better reflect. — teknoarcanist, Mar 10 '11 at 13:27

score 5 · Accepted Answer · answered Mar 10 '11 at 09:07

5

Maybe unless [1,4,7].include?($my_variable[1]) will do the trick?

answered Mar 10 '11 at 09:07

lwe

score 2 · Answer 2 · answered Mar 10 '11 at 09:09

2

unless [1,4,7].include? $my_variable[1]
  do_smth
end

answered Mar 10 '11 at 09:09

2 Answers2