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In Ruby, retry is mostly used in the context of exception management. When an exception occurs inside a begin block, control is passed to the rescue block, which handles the situation. Following that, the code beneath the rescue block is typically executed.

  • Start retries ||= 0 places rescue retry if (retries += 1) 3 end "try ## retries" raise "the roof" #
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  • Require "continuation" counter = 0 continuation = callcc { |c| c } # define our savepoint puts(counter += 1) continuation.

If the task is completed successfully (for example, payment is received), simply exit the begin block. However, if the operation has not been completed or has failed (for example, payment has failed), we will redirect our call to the retry statement, which will retry the task from the same place.

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