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Aug 17th, 2020
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  1. var someProp: VarType?
  2.  
  3. // result should be VarType not VarType?
  4. if (someProp != null) {
  5.   return someProp
  6. }
  7. else {
  8.   someProp = computeVariable()
  9.   return someProp
  10. }
  11.  
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