We also want to give our users a good experience so we are going to add a command-line parser so the users of our application can specify some parameters before starting the voting process. There will be only one argument that we are going to implement and that is --hashtags, where users can pass a space-separated list of hashtags.
With that said, we are going to define some rules for these arguments. First, we will limit the maximum number of hashtags that we are going to monitor, so we are going to add a rule that no more than four hashtags can be used.
If the user specifies more than four hashtags, we will simply display a warning on the Terminal and pick the first four hashtags. We also want to remove the duplicated ...
