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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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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...
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...
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...
Fastest sort of fixed length 6 int array
...s (e.g. CUDA - being branchless there are no problems with warp divergence etc).
See also: Fast algorithm implementation to sort very small list
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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...
When would anyone use a union? Is it a remnant from the C-only days?
..., or implement long double arithmetic for a CPU which does not support it, etc.
Saving storage space when fields are dependent on certain values:
class person {
string name;
char gender; // M = male, F = female, O = other
union {
date vasectomized; // for males ...
What is the argument for printf that formats a long?
...ompiler name and version that you are using and the platform (CPU type, OS etc.) that it is compiling for.
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What is the JavaScript version of sleep()?
... to a specific script, page, or function without the engine clobbering the CPU and freezing the app like a maniac. It's 2015 and you shouldn't be able to crash an entire web browser with while(1). We have Flash for things like that.
– Beejor
Sep 12 '15 at 5:10
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