小编use*_*207的帖子

def foo
  puts "in foo"
  s = yield
  puts "s = #{s}"
  return 2
ensure
  puts "in ensure"
  return 1
end

def bar
  foo do
    puts "in bar block"
    return 3
  end
  return 4
end


[36] pry(main)> r = bar
in foo
in bar block
in ensure
=> 4

我期望r = 3,但事实证明它是r = 4.如果我删除了确保代码,则预期r = 3.为什么？

def foo
  puts "in foo"
  s = yield
  puts "s = #{s}"
  return 2
end

r = bar
in foo
in bar block
=> …