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解决：Apache is running a threaded MPM,but your PHP Modle is not compi...
...又可以正常与 worker MPM 搭配了。
来源：http://blog.csdn.net/phphot/article/details/2796776
解决：重新编译Apache，使用prefork兼容模式，详细参考http://httpd.apache.org/docs/2.2/mpm.html
./configure --prefix=/usr/local/apache2 --enable-module=shared --with-m...
MQTT相关知识研究笔记 - 创客硬件开发 - 清泛IT社区，为创新赋能！
...合设备（网关）接入EMQX。
EMQX 搭建参考：https://blog.csdn.net/xiaolong11 ... e/details/134280836
Mosquitto 安装包下载：https://mosquitto.org/download/
2、与Node-RED有啥区别？Node-RED 是一种编程工具，用于以新颖有趣的方式将硬件设备、API 和在...
Why is a round-trip conversion via a string not safe for a double?
...
I found the bug.
.NET does the following in clr\src\vm\comnumber.cpp:
DoubleToNumber(value, DOUBLE_PRECISION, &number);
if (number.scale == (int) SCALE_NAN) {
gc.refRetVal = gc.numfmt->sNaN;
goto lExit;
}
if (number.scale == ...
What ReSharper 4+ live templates for C# do you use? [closed]
...
Check if a string is null or empty.
If you're using .Net 4 you may prefer to use string.IsNullOrWhiteSpace().
Shortcut: sne
Available in: C# 2.0+ where expression is allowed.
string.IsNullOrEmpty($VAR$)
Macro properties:
VAR - suggest a variable of type string. Editible = tru...
Under what circumstances is an SqlConnection automatically enlisted in an ambient TransactionScope T
... promotion can only be avoided by using automatic enlistment.
(2) Before .Net 4.0, I highly recommend setting "Transaction Binding=Explicit Unbind" in the connection string. This issue is fixed in .Net 4.0, making Explicit Unbind totally unnecessary.
(3) Rolling your own CommittableTransaction and...
How to check if a variable exists in a FreeMarker template?
... so I just followed the syntax of the question: see freemarker.sourceforge.net/docs/…
– Ulf Lindback
Mar 18 '10 at 7:52
10
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How is the Linux kernel tested ?
... of the kernel is being changed of course - the testing you'd do for a new network driver is quite different to the testing you'd do when replacing the core scheduling algorithm.
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How to find out which processes are using swap space in Linux?
...lumns, but they don't seem to do anything on my machine): htop.sourceforge.net/index.php?page=faq
– yukondude
Nov 11 '09 at 19:25
6
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Node.js app can't run on port 80 even though there's no other process blocking the port
...
Short answer: You can allow node access to that port using:
setcap 'cap_net_bind_service=+ep' /path/to/nodejs
long answer
Edit:
May not work on new node versions
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...
List or IList [closed]
...l ever write your own IList that adds anything to the ones already in the .NET framework are so remote that it's theoretical jelly tots reserved for "best practices".
Obviously if you are being asked which you use in an interview, you say IList, smile, and both look pleased at yourselves for bein...