an error --> a wanted feature

[nilamo]

Ruby has a feature that seems similar, where you can pass a block to a function. Not an annonymous function, but an actual block. Then, within the function, you can yield to that block. It's sort of like our iterators/generators, but is used for a whole lot of neat looking magic (like emulating with). http://ruby-doc.com/docs/ProgrammingRuby...rs.html#UD

def threeTimes
  yield
  yield
  yield
end
threeTimes { puts "Hello" }

produces:

Output:
Hello
Hello
Hello

Ok, I guess that's not really similar, it's just the first thing I thought of when it comes to functions doing different things depending on what happens "after" you call it.