前几天在布署合约时遇到了很扎心的问题：总是在最后一步不成功！尝试了所有的可能性，最后归结于工具（truffle）的问题了，因为我用Remix时是可以布署成功的。 搜索了一些其它布署工具，hardhat的呼声挺高的，就拿来尝试下。看了下它的使用手册，走了一遍流程，布署了下合约，竞发现相当丝滑！竞是一步就成功啰！ 教程在这，写得不错。和truffle类似，也有编译和布署这些，总体很相似。 安装 npm

This is my entry into #yellowwednesday #colorchallenge. It is a photograph of a hard hat. A hard hat is used mostly in construction sites to protect the head from falling objects.

Tribute to one of my favorite movies I put this on the back corner of the hardhat.

These are a few pictures of a hardhat I just finished for my friend at work, he loves horror movies so I thought this was fitting.