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Safely limiting Ansible playbooks to a single machine?
...k with a group of hosts:
$ ansible-playbook user.yml --extra-vars "target=office" --list-hosts
playbook: user.yml
play #1 (office): host count=3
imac-1.local
imac-2.local
imac-3.local
Forgetting to define hosts is safe!
$ ansible-playbook user.yml --list-hosts
playbook: user.yml...
PHP大潮将至 PHP近年发展分析 - 创意 - 清泛网 - 专注C/C++及内核技术
...他们就加入了PHP的研发,后来又一起开发了Zend Engine,并免费嵌入到PHP当中,发布了PHP4从而让PHP真正发展起来。
我们可以发现,再后来PHP一些列的版本升级中,PHP一直围绕着Web来增加它的特性,这点对于准备长期使用PHP来作为...
/data/user/0/xxxx/files(内部存储)和 /storage/emulated/0/Android/data...
...:
当需要存储以下内容时:
大型文件(如视频缓存、离线地图)。允许用户通过文件管理器查看(但不可修改)的文件。需要跨应用共享但不想使用 MediaStore 的文件(通过 FileProvider 共享)。
6. 代码示例(1) 写入内部存储
// ...
Are there any O(1/n) algorithms?
...nswer:
Do any two people in a set have the same birthday? When n exceeds 365, return true. Although for less than 365, this is O(n ln n). Perhaps not a great answer since the problem doesn't slowly get easier but just becomes O(1) for n > 365.
...
MySQL selecting yesterday's date
...)-1) and last_day(curdate());
Last 1 year:
between subdate(curdate(), 365) and subdate(curdate(), 1)
Next 1 year:
between adddate(curdate(), 365) and adddate(curdate(), 1)
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Android应用开发性能优化完全分析 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...当然了,本文不会就此编辑这么一次,因为技术在发展,工具在强大(写着写着Android Studio 1.4版本都推送了),自己的经验也在增加,所以本文自然不会覆盖所有性能优化及分析;解决的办法就是该文章会长期维护更新,同时在...
CreateElement with id?
...answered Aug 20 '16 at 5:26
JLee365JLee365
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一款IP:端口监控工具 服务器端口监控工具[附源码] - C++ UI - 清泛IT社区...
TradeMonitor v1.0
功能介绍:
监控ip:port,类似于telnet命令。
界面清晰简洁,异常连接的情况一目了然。
支持添加、编辑、删除、移动ip:port组合,可监控多组,支持ip:port备注。
支持自动刷新,刷新间隔可配置,同时也可手动刷...
gcc自带内存泄漏、内存越界检测工具 - asan - C/C++ - 清泛网 - 专注C/C++及内核技术
gcc自带内存泄漏、内存越界检测工具 - asangcc-asanasan内存异常检测工具,功能类似valgrind,不过是gcc自带的原生工具,使用起来非常简单,只需要链接时加上 -lasan 即可。(编译选项也可以加上 -fsanitize=address)测试代码如 asan内...
In C#, how do I calculate someone's age based on a DateTime type birthday?
...
My suggestion
int age = (int) ((DateTime.Now - bday).TotalDays/365.242199);
That seems to have the year changing on the right date. (I spot tested up to age 107.)
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