ruby - 没有缩进的多行字符串

Question

如何让一个没有前导空格的多行字符串仍然与方法正确对齐？这是我的一些尝试。正在工作的那个不是很好玩...

module Something
  def welcome
"
Hello

This is an example.  I have to write this multiline string outside the welcome method
indentation in order for it to be properly formatted on screen. :(
"
  end
end

module Something
  def welcome
    "
    Hello

    This is an example.  I am inside welcome method indentation but for some reason
    I am not working...
    ".ljust(12)
  end
end

module Something
  def welcome
    "Hello\n\n"+
    "This is an example.  I am inside welcome method indentation and properly"+
    "formatted but isn't there a better way?"
  end
end

更新

这是一个 method from the ruby style guide :

code = <<-END.gsub(/^\s+\|/, '')
  |def test
  |  some_method
  |  other_method
  |end
END
# => "def test\n  some_method\n  other_method\nend\n"

Answer 1

从 Ruby 2.3.0 开始，有一个内置的方法:[ <<~ ]

indented = 
<<-EOS
  Hello

  This is an example. I have to write this multiline string outside the welcome method indentation in order for it to be properly formatted on screen. :(
EOS

unindented =
<<~EOS
  Hello

  This is an example. I have to write this multiline string outside the welcome method indentation in order for it to be properly formatted on screen. :(
EOS

puts indented #=>

  Hello

  This is an example. I have to write this multiline string outside the welcome method indentation in order for it to be properly formatted on screen. :(

puts unindented #=>

Hello

This is an example. I have to write this multiline string outside the welcome method indentation in order for it to be properly formatted on screen. :(

Multiline strings in Ruby 2.3 - the squiggly heredoc