Split array into comma separated list of values

Question

I'm working on a bit of metaprogramming using send methods quite a bit. I've been successful so far because the methods I'm send ing to only take one argument.

Example:

client is an API client

@command is a method on client taken as an option to a CLI utility

@verb is a method on command taken as another option in the CLI

def command_keys
  case @command
  when "something"
    self.command_options.slice(:some, :keys)
  end
end

Then I call the API client like this:

client.send(@command).send(@verb, command_keys)

This works since the methods all take a Hash as their argument. The problem I've run into is when I need to send more than 1 parameter in command_keys . What I'm wondering is the best way to handle the command_keys method returning more than 1 value. Example:

def command_keys
  case @command
  when "something"
    return self.command_options[:some], self.command_options[:keys]
  end
end

In this case, command_keys returns an Array as expected, but when I try to pass that in the send(@verb, command_options) call, it passes it as an Array (which is obviously expected). So, to make a long story short, is there some easy way to make this condition be handled easily?

I know send(@verb, argument1, argument2) would get me the result I want, but I would like to be able to not have to give my script any more implementation logic than it needs, that is to say I would like it to remain as abstracted as possible.

Answer 1

Use splat. You might have to rethink the code a bit, but something like:

client.send(@command).send(@verb, *all_the_args)