Arithmetic evaluation: Difference between revisions

<lang ruby>for [

['2+3' => 5],

['-4-3' => -7],

['-+2+3/4' => -1.25],

['2*3-4' => 2],

['2*(3+4)+2/4' => 2/4 + 14],

['2*-3--4+-0.25' => -2.25],

['2 * (3 + (4 * 5 + (6 * 7) * 8) - 9) * 10' => 7000],

].each { |arr|