エラーが出るかもしれない任意のメソッドを最大n回試行するメソッド

commit.rb

def commit(symbol,*arg)
  c = 0 
  begin
    return self.send(symbol.to_sym,*arg)
  rescue
    c += 1
    retry if c < 5
  end
  "get less than 90 5 times..."
end

def try_to_point_get_more_than_90
  point = rand * 100
  raise Error if point < 90
  point
end

commit :try_to_point_get_more_than_90
#=> 90.01797302249399
commit :try_to_point_get_more_than_90
#=> "get less than 90 5 times..."
commit :try_to_point_get_more_than_90
#=> "get less than 90 5 times..."
commit :try_to_point_get_more_than_90
#=> "get less than 90 5 times..."
commit :try_to_point_get_more_than_90
#=> "get less than 90 5 times..."
commit :try_to_point_get_more_than_90
#=> 90.45187243345141
commit :try_to_point_get_more_than_90
#=> "get less than 90 5 times..."