Created
August 12, 2013 22:13
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| def e(s, v=[:+, :-, :*, :/])v.empty? ? s.to_i : s.split(v[0].to_s).map{|y| e(y, v[1..-1])}.reduce(v[0])end | |
| p e('2') # 2 | |
| p e('2 * 12') # 24 | |
| p e('1-10+4*2') # -1 | |
| p e('1+50/2*3') # 76 |
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