module Bonehead

Public: Executes a block of code and retries it up to ‘tries` times if an exception was raised.

tries - An Integer (default: Float::Infinity). exceptions - A list of Exceptions (default: StandardError).

Examples

class Wrapper
  include Bonehead

  def login(username, password)
    insist(5, HTTPError) do
      HTTP.post "..."
    end
  end
end

Returns the return value of the block.

# File lib/bonehead.rb, line 23
def insist(tries = Float::Infinity, *exceptions, &block)
  exceptions << StandardError if exceptions.empty?

  catch :__BONEHEAD__ do
    tries.times do |i|
      begin
        throw :__BONEHEAD__, yield(i.succ)
      rescue *exceptions
        tries.pred == i ? raise : next
      end
    end
  end
end