What are the ways to handle errors in Swift?

When a error is thrown, there must be a piece of code dedicated to handle the error thrown. Swift provides four possible ways to handle errors. They are as follows:

  • We can propagate the error from the function to the code that calls the function.
  • Use a try! or try?..do..catch statement
  • Handle the error as optional value
  • Assert that the error will not happen

How to propagate error from a function using throw keyword…

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