CODEWITHSUNDEEP
ruby
jackfrost5234
jackfrost5234

Reputation: 229

Ruby exception handling

I enclosed some code in a begin rescue end block:

begin
  ...
rescue StandardError => e
  puts("Exception #{e} occurred")
  puts("Copying script to error folder.")
  FileUtils.cp("Demo.rb", "C:/Ruby/Failure")
end

I'm not sure how to execute a bit of code if no exceptions are thrown so I can copy my script to a success folder. Any help would be appreciated.

Upvotes: 2

Views: 443

Answers (2)

user229044
user229044

Reputation: 239230

You're thinking about exceptions incorrectly.

The whole point of exceptions is that the main body of your code proceeds as though no exceptions were thrown. All of the code inside your begin block is already executing as though no exceptions were thrown. An exception can interrupt the normal flow of code, and prevent subsequent steps from executing.

You should put your file copy stuff inside the begin block:

begin
  #code...
  # This will run if the above "code..." throws no exceptions
  FileUtils.cp("Demo.rb", "C:/Ruby/Success")
rescue StandardError => e
  puts("Exception #{e} occurred")
  puts("Copying script to error folder.")
  FileUtils.cp("Demo.rb", "C:/Ruby/Failure")
end

Upvotes: 2

spickermann
spickermann

Reputation: 106782

You could use else to run code only if there wasn't an exception:

begin
  # code that might fail
rescue
  # code to run if there was an exception
else
  # code to run if there wasn't an exception
ensure
  # code to run with or without exception
end

Upvotes: 4

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