问题1：The safe area layout guide is the space available to our view, excluding rounded corners and notches. 答案：All important content should lie inside the safe area, or you risk it being obscured.
问题2：layoutMarginsGuide and safeAreaLayoutGuide are the same thing. 答案：Not quite: layoutMarginsGuide is inside the safeAreaLayoutGuide, so it will be slightly smaller.
问题3: Activating multiple constraints at once is faster than modifying isActive for each one. 答案：Apple explicitly recommends using activate() for this purpose.
问题4: Content hugging priority controls how likely Auto Layout is to make a view smaller than its intrinsic content size. 答案：Content hugging priority controls how likely Auto Layout is to make a view larger than its intrinsic content size.
有时候测试同学提供的release包的崩溃日志过来，直接提供的是ips文件，如何将ips文件解析成带符号的崩溃日志呢？ 1.在桌面新建test1文件夹，将ips文件拷贝进去，重命名为xxx.crash文件。 2.找到对应版本的dSYM文件，拷贝至test1目录下。 3.前往路径/Applications/Xcode.app/Contents/SharedFrameworks/DVTFoundation.framework/Versions/A/Resources/symbolicatecrash，将文件symbolicatecrash拷贝至test1目录。 4.执行命令./symbolicatecrash ./xxx-2021-07-14-204056.crash ./xxx.dSYM > log.crash，如果没报错，在test1目录下就会生成一个log.crash文件，里面是符号化过的，可以看见部分具体的函数和库名。 5.如果出现报错Error: "DEVELOPER_DIR" is not defined at ./symbolicatecrash line 69.，请执行一下命令export DEVELOPER_DIR="/Applications/Xcode.app/Contents/Developer"，然后再执行第4步的命令即可。
在 target 选项输入你域名要绑定的 ip ，在 Name 选项输入 www 或其它子域名，type 你可以根据需要进行选择。当保存成功后，你就可以直接输入域名访问你的站点了。 由于 freenom 的 dns 解析对国内可能会比较不友好，你可以修改域名默认的 dns 解析服务，把 dns解析服务修改为国内的 dns 服务，比如 CloudXNS 或者 DNSPod 。
进度 8/17 : 配置V2Ray开机自启 Created symlink from /etc/systemd/system/multi-user.target.wants/v2ray.service to /etc/systemd/system/v2ray.service. ---> 配置V2Ray开机自启成功
$ /usr/bin/security find-identity -v -p codesigning 0 valid identities found
此处的命令的意思是：
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/usr/bin/security: A simple command line interface which lets you administer keychains, manipulate keys and certificates, and do just about anything the Security framework is capable of from the command line. (是一个管理钥匙串、keys和证书的命令行接口)
find-identify: 查找证书和私钥key的命令
-v: 只显示有效的证书，默认显示所有的证书
-p: 指定策略
具体的命令行的文档查看一下：
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$ /usr/bin/security find-identity --help find-identity: illegal option -- - Usage: find-identity [-p policy] [-s string] [-v] [keychain...] -p Specify policy to evaluate (multiple -p options are allowed) Supported policies: basic, ssl-client, ssl-server, smime, eap, ipsec, ichat, codesigning, sys-default, sys-kerberos-kdc, macappstore, appleID -s Specify optional policy-specific string (e.g. DNS hostname for SSL, or RFC822 email address for S/MIME) -v Show valid identities only (default is to show all identities) If no keychains are specified to search, the default search list is used. Find an identity (certificate + private key).
poet@poetdeMacBook-Pro ~ % cd /Users/poet/.nvm/versions/node/ poet@poetdeMacBook-Pro node % ls v11.15.0 v7.10.0 v8.11.1
# 在v8.11.1目录下面的bin目录查看到 hexo poet@poetdeMacBook-Pro node % cd v8.11.1 poet@poetdeMacBook-Pro v8.11.1 % ls CHANGELOG.md README.md etc lib LICENSE bin include share poet@poetdeMacBook-Pro v8.11.1 % cd bin poet@poetdeMacBook-Pro bin % ls express hexo n node npm npx nrm
# 在v7.10.0目录下面的bin目录下没有查看到hexo相关的文件 poet@poetdeMacBook-Pro node % cd v7.10.0 poet@poetdeMacBook-Pro v7.10.0 % ls CHANGELOG.md README.md etc lib LICENSE bin include share poet@poetdeMacBook-Pro v7.10.0 % cd bin poet@poetdeMacBook-Pro bin % ls node npm
# 在v11.15.0目录下面的bin目录下没有查看到hexo相关的文件 poet@poetdeMacBook-Pro node % cd v11.15.0 poet@poetdeMacBook-Pro v11.15.0 % ls bin include lib share poet@poetdeMacBook-Pro v11.15.0 % cd bin poet@poetdeMacBook-Pro bin % ls node npm npx
Commands: help Get help on a command. init Create a new Hexo folder. version Display version information.
Global Options: --config Specify config file instead of using _config.yml --cwd Specify the CWD --debug Display all verbose messages in the terminal --draft Display draft posts --safe Disable all plugins and scripts --silent Hide output on console
For more help, you can use 'hexo help [command]'for the detailed information or you can check the docs: http://hexo.io/docs/
截图2:
解决完乱码之后的截图：
