Atom 是否打破 ruby to_s 覆盖？

Question

I want puts to return @value. The code is below:

class Tile
  def initialize(value, given=false)
    @value = value
    @given = given
  end

  def newValue(value)
    @value = value if @given == false
  end

  def to_s
    @value
  end

end

t = Tile.new(5)
t.newValue(6)
debugger
puts t

This results in the printing of just the object id, no variables.

Why? And what is going wrong here? Is it an Atom thing?

Answer 1

puts prints each argument by calling its to_s method. It also expects the to_s method to return a string . If to_s returns something else it ignores that value and prints the object's class and id instead.

In your example, @value is an integer. To fix your code:

def to_s
  @value.to_s
end