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An efficient compression algorithm for short text strings [closed]
...an be dropped altogether, as long as you can mark the end of the protocol. Etc. Go read about URL format, and think on how they can be codified to take less space.
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iOS开发过程中的各种tips - 更多技术 - 清泛网 - 专注C/C++及内核技术
...过程中的各种tips前言iOS开发过程中，总有那么一些个小问题让人纠结，它们不会让程序崩溃，但是会让人崩溃。除此之外，还将分享一些细节现在我通过自己的总...前言
iOS开发过程中，总有那么一些个小问题让人纠结，它们不...
Entity Framework select distinct name
...etter performance than grouping. Distinct : SQL Server Execution Times: CPU time = 0 ms, elapsed time = 50 ms. Grouping : SQL Server Execution Times: CPU time = 0 ms, elapsed time = 112 ms.
– Andre Mendonca
Jul 15 '15 at 22:02
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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 ...
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...
Apple Pay入华遇阻 只因BAT太受欢迎？ - 资讯 - 清泛网 - 专注C/C++及内核技术
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国内第三方支付平台抓住了商户的哪些痛？
要谈论这个问题，就必须关注线下商户所面临的痛点。早期移动支付的最大难点是支付媒介的缺失，这是拉卡拉们寸步难行而银联可以一家独大的关键所在。但随着O2O消费模式的普及...
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 ...
Replace first occurrence of pattern in a string [duplicate]
... I used this kind of code in a heavy loop, it consumes a lot of CPU and memory. It must be avoided in these kind of loops.
– Ali Erdoğan
Feb 14 '16 at 12:44
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In C, do braces act as a stack frame?
... local variables may not use any stack space at all: they could be held in CPU registers or in some other auxiliary storage location, or be optimized away entirely.
So, the d array, in theory, could consume memory for the entire function. However, the compiler may optimize it away, or share its me...