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Redis 的性能幻想与残酷现实 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...性能测试数据，心里有个底。
测试前提
Redis version 2.4.2
Using the TCP loopback
Payload size = 256 bytes
测试结果
SET: 198412.69/s
GET: 198019.80/s
这个数据刚一看觉得有点超出预期了，不过看了测试前提是规避了网络开销的，Client 和 Serv...
How to initialize std::vector from C-style array?
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240
Don't forget that you can treat pointers as iterators:
w_.assign(w, w + len);
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Kotlin secondary constructor
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94
Update: Since M11 (0.11.*) Kotlin supports secondary constructors.
For now Kotlin supports on...
How to install PyQt4 on Windows using pip?
I'm using Python 3.4 on Windows. When I run a script, it complains
13 Answers
13
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How to get a subset of a javascript object's properties
... ruffin
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answered Sep 5 '16 at 15:12
Ivan NosovIvan Nosov
9,69522 go...
Disable all table constraints in Oracle
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148
It is better to avoid writing out temporary spool files. Use a PL/SQL block. You can run this...
Undefined reference to `sin` [duplicate]
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4 Answers
4
Active
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Modulo operator with negative values [duplicate]
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From ISO14882:2011(e) 5.6-4:
The binary / operator yields the quotient, and the binary % operator
yields the remainder from the division of the first expression by the
second. If the second operand of / or % is zero the behavi...
C++STL容器使用经验总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...生的一个简单办法是使容器包含指针而不是对象。
第4条：调用empty而不是检查size()是否为0。
理由很简单：empty对所有的标准容器都是常数时间操作，而对一些list的实现，size耗费线性时间。
第5条：区间成员函数优先...