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Why does the C preprocessor interpret the word “linux” as the constant “1”?
...le? It could also be > emptyfile.c or : > emptyfile.c or dd if=/etc/passwd of=emptyfile.c count=0 or …
– Jonathan Leffler
Oct 10 '13 at 14:07
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How does `scp` differ from `rsync`?
...havior. It supports complex filter rules, runs in batch mode, daemon mode, etc. scp has only a few switches.
In summary, use scp for your day to day tasks. Commands that you type once in a while on your interactive shell. It's simpler to use, and in those cases rsync optimizations won't help much.
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JMS and AMQP - RabbitMQ
...Queuing Protocol).
Currently, many Client APIs (e.g., Java, C++, RESTful, etc.) are available to enable the usage of RabbitMQ messaging services.
JMS (Java Messaging Service) is a JCP standard defining a set of structured APIs to be implemented by a MOM. An example of MOM that implements (i.e. is ...
Should I use multiplication or division?
...ython it's faster to multiply than to divide, but as you get closer to the CPU using more advanced VMs or JITs, the advantage disappears. It's quite possible that a future Python VM would make it irrelevant
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This app won't run unless you update Google Play Services (via Bazaar)
...alled these on an emulator configured with platform: 4.1.2, API Level: 16, CPU Intel/Atom x86) and my Google Maps V2 application works again.
That was all .. none of the other steps regarding /system/app were required.
My application only uses the Google Maps API, no doubt, more steps are required...
What is the equivalent to a JavaScript setInterval/setTimeout in Android/Java?
...ce/android/os/Handler.html
If you previously used javascript setTimeout() etc to schedule a task to run in the future, this is the Android way of doing it (postDelayed / sendMessageDelayed).
Note that neither Handlers or Timers makes an Android phone wake up from sleep mode. In other words, if you...
Logging in Scala
...ries have been some wrappers around a Java logging framework (slf4j, log4j etc), but as of March 2015, the surviving log libraries are all slf4j. These log libraries provide some sort of log object to which you can call info(...), debug(...), etc. I'm not a big fan of slf4j, but it now seems to be t...
Citrix服务器虚拟化：XenApp 6.5发布服务器上的应用程序 - 更多技术 - 清泛...
...用程序类型后，必须为要发布的文件指定 URL（统一资源定位器）或 UNC（通用命名约定）路径。
单击浏览可查看网络中的可用内容资源。
3) 应用程序：发布安装在场中的一台或多台服务器上的应用程序。请注意，如果您在某...
In Docker, what's the difference between a container and an image? [duplicate]
...docker run -i -t ubuntu /bin/bash
root@48cff2e9be75:/# ls
bin boot dev etc home lib lib64 media mnt opt proc root run sbin srv sys tmp usr var
root@48cff2e9be75:/# cat > foo
This is a really important file!!!!
root@48cff2e9be75:/# exit
Don't expect that file to stick around w...
Memcached vs. Redis? [closed]
...ciently, expire all the members together, delete all the members together, etc. Great for any use case where you have several key/value pairs that need to grouped.
One example use of a hash is for storing user profiles between applications. A redis hash stored with the user ID as the key will allow ...