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Jul 22nd, 2019
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  1. function addTogether(a, b) {
  2. if(!Number.isInteger(a)) {
  3. return undefined
  4. }
  5. if (b === undefined) {
  6.  
  7. return function(b) {
  8. if(!Number.isInteger(b)){
  9. return undefined
  10. }
  11. return a + b
  12. }
  13. } else if (!Number.isInteger(b)) {
  14. return undefined
  15. }
  16. return a + b
  17. }
  18. addTogether(2,3);
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