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How to execute file I'm editing in Vi(m)
...lt;F6> :w<CR>:silent !chmod 755 %<CR>:silent !./% > .tmp.xyz<CR>
\ :tabnew<CR>:r .tmp.xyz<CR>:silent !rm .tmp.xyz<CR>:redraw!<CR>
This writes the current buffer, makes the current file executable (unix only), executes it (unix only) and redirect...
java.net.UnknownHostException: Invalid hostname for server: local
...is environment variable ($HOSTNAME) when it connects to the server.
[root@xyz ~]# echo $HOSTNAME
xyz
[root@xyz ~]# ping $HOSTNAME
ping: unknown host xyz
[root@xyz ~]# hostname -f
hostname: Unknown host
There are dozens of things that can cause this. Please comment if you discover a new reason....
搜索不到ble设备 - App应用开发 - 清泛IT社区，为创新赋能！
使用AI伴侣能搜索到ble设备，但是安装apk后搜索不到,这是怎么回事呢大概率是权限问题，在手机设置将 app 相关权限都打开试试，尤其是发现设备等权限。
创业者如何发现开放却未知的秘密 - 资讯 - 清泛网 - 专注C/C++及内核技术
...程上以“番禺路虹桥路口”为地理位置查询经济型酒店，搜索结果显示包括如家、汉庭在内的有70家酒店，价格低见79元起，低于200元的选择空间非常之多；而在airbnb官网上以番禺路虹桥路为关键词的房源只有39间，200元/间夜以...
Dynamically set local variable [duplicate]
...nd expect it to work.
>>> def foo():
lcl = locals()
lcl['xyz'] = 42
print(xyz)
>>> foo()
Traceback (most recent call last):
File "<pyshell#6>", line 1, in <module>
foo()
File "<pyshell#5>", line 4, in foo
print(xyz)
NameError: global na...
新浪是如何分析处理32亿条实时日志的？ - 更多技术 - 清泛网 - 专注C/C++及内核技术
...、云存储、弹性计算平台等十多个部门的多个产品的日志搜索分析业务，每天处理约32亿条（2TB）日志。
技术架构
简单介绍一下服务的技术架构：
这是一个再常见不过的架构了：
（1）Kafka：接收用户日志的消息队列。
...
warning: incompatible implicit declaration of built-in function ‘xyz’
I'm getting a number of these warnings when compiling a few binaries:
4 Answers
4
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What is “loose coupling?” Please provide examples
...od. Now let's say I have another class that looks like this:
public class XYZ
{
public void doNetworkAccess() {...}
}
It looks exactly the same as ABC, but let's say it works over the network instead of on disk. So now let's write a program like this:
if(config.isNetwork()) new XYZ().doNetwor...
How do I use spaces in the Command Prompt?
...use of white space characters, for example, when I need to access the app xyz which location is :
C:\Program Files\ab cd\xyz.exe
To run this from windows cmd prompt, you need to use
C:\"Program Files"\"ab cd"\xyz.exe
or
"C:\Program Files\ab cd\xyz.exe"
...