ruby-on-rails - 如何定义一个代码块一次使用多次？

Question

代码块是指:

def callBlock
  yield
  yield
end


callBlock { puts "In the block" } #this is the block

Answer 1

b = lambda { puts "this is the block" }
callBlock &b

或

b.call

带参数:

def call_block_name
    yield "Dave"
    yield "Mary"
    end

b = lambda { |s| puts "this is block #{s}" }
call_block_names &b

和

b.call("sam")