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“21天教你学会C++” - 创意 - 清泛网 - 专注C/C++及内核技术
...未命中的情况），从磁盘上读取连续的数据要多长时间，定位到磁盘上的新位置又要多长时间。（答案在这里）
尝试参与到一项语言标准化工作中。可以是ANSI C++委员会，也可以是决定自己团队的编码风格到底采用2个空格的缩...
How to convert decimal to hexadecimal in JavaScript
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I am "pulling" numbers from an array ('255,0,55', etc) and the .toString(16) didn't work. All I got were the same numbers! I added the "Number" function to the front, and now it works! Only spent about four hours trying to find the solution!!
– Cristofa...
Is memcached a dinosaur in comparison to Redis? [closed]
...ation to memcached. Other things are also dated (redis is super fast now, etc), but FYI if you're here five years later...
– dannysauer
Mar 11 '15 at 16:02
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What is LDAP used for?
...ntain by network administrators. For example you can:
use the same login/passwd to login on an Intranet and on your local computer.
give specific permissions to a group of user. For example some could access some specific page of your Intranet, or some specific directories on a shared drive.
get a...
从一个开发的角度看负载均衡和LVS - 更多技术 - 清泛网 - 专注C/C++及内核技术
...允许的情况下我们会采用软负载，软负载解决的两个核心问题是：选谁、转发，其中最著名的是LVS（Linux Virtual Server）。
三、软负载——LVS
LVS是四层负载均衡，也就是说建立在OSI模型的第四层——传输层之上，传输层上有...
为什么我们程序员写不出好代码？ - 杂谈 - 清泛网 - 专注C/C++及内核技术
...提交的仓库里。如果代码行数都计算在内的话，原本一个问题只需10行代码即可解决，程序员有可能编写5000行代码，来让功能更加灵活和兼容，这样，他的代码总量就会增加5000行了。
衡量生产力反而会使代码变的更糟，让项目...
Pointer to pointer clarification
...ay
*ipp = ip2;
The * operator turns a pointer back into a variable. We fetch the value of ipp, which is "pointer to ip1 and turn it into a variable. What variable? ip1 of course!
Therefore this is simply another way of saying
ip1 = ip2;
So we fetch the value of ip2. What is it? "pointer to j...
How does a “stack overflow” occur and how do you prevent it?
...9 overwrites memory outside the stack. This might overwrite memory, code, etc.
Many programmers make this mistake by calling function A that then calls function B, that then calls function C, that then calls function A. It might work most of the time, but just once the wrong input will cause it t...
Getting a list of values from a list of dicts
...key values from list of dictionaries in python?
Ex:
data =
[{'obj1':[{'cpu_percentage':'15%','ram':3,'memory_percentage':'66%'}]},
{'obj2': [{'cpu_percentage':'0','ram':4,'memory_percentage':'35%'}]}]
for d in data:
for key,value in d.items():
z ={key: {'cpu_percentage': d['cpu_per...
Asynctask vs Thread in android
...bytes may take a long time, when the server is busy, unreachable (timeout) etc. A fix could be to use AsyncTask with own scheduler.
– xmedeko
Jun 17 '16 at 7:55
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