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This article briefly introduces how to apply for and deploy an Alibaba Cloud free SSL certificate. Apply for a certificate Log in to the Alibaba Cloud console, select the SSL 证书（应用安全） service, select SSL 证书in the sidebar, select a free certificate, and click立即创建证书: 证书申请in Newly Generated Certificate Entry Fill in the certificate domain name you […]

Rust’s road from entry to abandonment! ownership transfer between variables 1 2 3 4 let s1 = String ::from( “hello” ); let s2 = s1; // move the value of s1 to s2 // … so s2 is no longer valid here println! ( “{}, world!” , s1); // here s1 no longer owns “hello”