零成本名符其实 #zerocost #arc_swap 作者在实现一个库arc-swap，允许存储[Arc]，并且可以原子性地交换它。类似于RwLock<Arc>，但要更快且永远不会阻塞。此库被应用于作者的另外一个信号处理的库中signal-hook。

When it comes to processing transactions, intermediaries such as banks have been traditionally seen as a necessary nuisance: in reviewing and authorising payments, they have provided a vital service. But

Source One BIG QUESTION that many content creators' on Steemit, (or any of the other platforms that use STEEM Blockchain) asks every time they create a post...Will Anyone SEE/LISTEN/READ the post...and