Ruby块-在yield之后返回yield运行代码

Question

I want to return the output of yield but also execute the code after yield , is there a more "right" way?:

def myblock
  yield_output = yield
  puts 'after yield'
  yield_output
end

myblock {'my yield'}
# after yield
#  => my yield

Answer 1

You could use tap :

def myblock
  yield.tap { puts 'after yield' }
end

myblock { 'my yield' }
# after yield
#=> my yield