fluter之Scaffold

构造方法

AppBar

FloatingActionButton

  1. Appber类似于Ios和Android中的toolbar
  2. FloatingActionButton悬浮按钮,很方便很简单
  3. Drawer类似于Ios和Android设备中的汉堡菜单
  4. BottomNavigationBar底部导航栏在移动端很常见

参考链接

http://flutter.link/2018/03/20/Scaffold/

Dart语法学习

单例模式

调用

Problem with the SSL CA cert (path? access rights?)

升级wordpress发现502,于是查找接近方式,有人提出执行如下命令

mv /usr/lib64/libsqlite3.so.0.8.6 /usr/lib64/libsqlite3.so.0.8.6.bak

当时并未发现异常,但是当需要git pull时,发现提示如下

fatal: unable to access ‘xxxx’: Problem with the SSL CA cert (path? access rights?)

尝试各种解决方式,当尝试如下方法时

yum update -y nss curl libcurl

发现提示

There was a problem importing one of the Python modules

required to run yum. The error leading to this problem was:

   No module named sqlite

Please install a package which provides this module, or

verify that the module is installed correctly.

It’s possible that the above module doesn’t match the

current version of Python, which is:

2.6.6 (r266:84292, Jan 22 2014, 09:42:36) 

[GCC 4.4.7 20120313 (Red Hat 4.4.7-4)]

If you cannot solve this problem yourself, please go to 

the yum faq at:

于是怀疑是之前操作引起的问题,恢复后可以pull

http://yum.baseurl.org/wiki/Faq