learn-co-students / yield-and-blocks-prework Goto Github PK

Two things:

1. It took me a while to understand the point of yield from this. As I understand it, it's to allow us to build an abstract method into which you can push blocks of code, meaning the same method could give different results -- e.g. a hello method you can call for different starting letters:

hello(["Tim","Tom","Jim"]) do |name|
  if name.start_with?("T")
    puts "Hi, #{name}"
  end
end

hello(["Tim","Tom","Jim"]) do |name|
  if name.start_with?("J")
    puts "Hi, #{name}"
  end
end

This is not clear from the lab, and I think explaining it would help greatly. Until I realized this I wasn't clear on why yield was better than just writing the if statement inside the while loop.

2. The concept of yield and blocks could be clarified with labeled illustrations. This is a relatively abstract idea, and multiple modes of explanation would be useful.