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“互联网卖菜”没那么简单 创业者不要盲目跟风 - 资讯 - 清泛网 - 专注C/C+...
...的出发点是什么?便宜,吃的放心是最多的答案,但问及如何去做,多数人还是茫然。很多人都有这样的经历,每次去超市菜场总会暗骂商贩们把菜价喊得这么高,而且全部商贩统一口径不降价,第一反应想到的就是人工成本高...
总结const_cast、static_cast、dynamic_cast、reinterpret_cast - C/C++ - ...
...int类型在内存中所占字节数)。为了知道static_cast<> 实际如何,我们不得不要来看一下CDerived的内存布局。
CDerived的内存布局(Memory Layout)
如图所示,CDerived的内存布局包括两个对象,CBaseX 和 CBaseY,编译器也知道这一点...
推荐系统算法初探 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...显然匹配前两个词都不如直接匹配英超来得准确,系统该如何体现出关键词的这种“重要性”呢?这时我们便可以引入词权的概念。在大量的语料库中通过计算(比如典型的TF-IDF算法),我们可以算出新闻中每一个关键词的权重...
Finding three elements in an array whose sum is closest to a given number
...fy the problem statement, instead we will search for aj and ak that sum to ai +S.
– Boolean
May 20 '11 at 14:59
3
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20个命令行工具监控 Linux 系统性能 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...困难的工作。我已经有5年 Linux 管理员的工作经历,知道如何监控系统使其保持正常运行。为此,我们编写了对于 Linux/Unix 系统管理员非常有用的并且最常用的20个命令行系统监视工具。这些命令可以在所有版本的 Linux 下使用去...
Find which commit is currently checked out in Git
...how.
git log -1.
Bash prompt.
git status.
git bisect visualize.
I'll explain each option in detail below.
Option 1: git show
As explained in this answer to the general question of how to determine which commit you currently have checked-out (not just during git bisect), you can use git show wit...
How are 3D games so efficient? [closed]
...timized instructions and special techniques exist when you're developing against a particular set of hardware, to enable even better speedups.
The other part of your question is why a demo uses so much CPU:
... while a DX demo of a rotating Teapot @ 60fps uses a whopping 30% ?
It's common fo...
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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BAT的解决之道:得民心者得天下
而移动支付玩家又是如何做的呢?很显然BAT三家都意识到了这一问题,在解决方案上却各有千秋。
支付宝:补贴和导流依旧是拿手戏
先从支付宝来讲,得益于在电商时代积累的庞大用户体系...
Find a Git branch containing changes to a given file
I have 57 local branches. I know I made a change to a certain file in one of them, but I'm not sure which one. Is there some kind of command I can run to find which branches contain changes to a certain file?
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REDHAT 6.4 X64下ORACLE 11GR2静默安装 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...可以不安装或在安装完 pdksh 以后再安装。
将pdksh 程序包下载到本地。 Pdksh安装包需要在网上下载光盘里没有
# rpm -ivh pdksh-5.2.14-37.el5_8.1.x86_64.rpm
注意:如果提示该程序包与 ksh冲突,如果已经安装 ksh,建议使用命令 rpm -e ksh...
