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为什么需要监听网络变化?目前在 MetaMask 中切换网络,网页会自动刷新,但是这一特性后面将停止使用。 MetaMask: MetaMask will soon stop reloading pages on network change. If you rely upon this behav 阅读全文
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比如 mapping(address => uint) tester,只需要判断 mapping 是否为默认值 0, tester[msg.sender] == 0 "You can think of mappings as hash tables, which are virtually init 阅读全文
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Website and APP we used now are mostly web2.0 applications. While people practise in use, they can not make sure the data is accurate and safe. Why we 阅读全文
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Passport 的 Client 模型对应用户是默认的 User 模型、使用的 guards 是 api。 如果你发现自定义 passport 时总是调试不成功,那么很有可能是以下原因。 /** * Get the user that the client belongs to. * * @ret 阅读全文
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youdao.com result page Before: After: youtube.com index page Before: After: Later we will add more and more. Or you can submit issues to me on blog/gi 阅读全文