Can I access a variable within a heredoc in Ruby?

问题

If I have a method

  def some_method p = {}
    string = <<-MY_TERMINATOR
      Example text blah blah
      lorem ipsum something or another
    MY_TERMINATOR
  end

how can I access the variable p[:name] from within the heredoc?

回答1:

You can interpolate just like in normal strings

<<-TERMINATOR
  Example #{p[:name]} blah blah blah
TERMINATOR

来源：https://stackoverflow.com/questions/3332849/can-i-access-a-variable-within-a-heredoc-in-ruby