如何傳遞processor_pool給模塊內的方法？
class Dummy
def initialize
processor_pool = Concurrent::FixedThreadPool.new(10)
@threadpool = Module.new do
extend Concurrent::Promises::FactoryMethods
def self.default_executor
return processor_pool # this cannot find the processor_pool variable
end
end
end
end
即使我將其設為實體變數，我也會收到相同的錯誤 @processor_pool
uj5u.com熱心網友回復：
像這樣的東西（為了示例，我稍微簡化了你的類以擺脫依賴關系，但它的結構是相同的）：
class Dummy
attr_reader :threadpool
def initialize
processor_pool = "It works"
@threadpool = Module.new do
define_method :default_executor do
return processor_pool # this cannot find the processor_pool variable
end
module_function :default_executor
end
end
end
Dummy.new.threadpool.default_executor # => "It works"
轉載請註明出處，本文鏈接：https://www.uj5u.com/qianduan/418354.html
標籤：
下一篇：我怎樣才能完成填充陣列？