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为何谷歌不可复制？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...程师提出了他们的解决方案，通过重建广告相关度的数据模型，提供更精确的推荐结果，这个理念成为谷歌Adwords赖以生存的基础，也成就了谷歌接下来十年领跑搜索广告领域的重要技术支持。
“这件事最重要的细节是什么？”...
How does Dijkstra's Algorithm and A-Star compare?
I was looking at what the guys in the Mario AI Competition have been doing and some of them have built some pretty neat Mario bots utilizing the A* (A-Star) Pathing Algorithm.
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“INSERT IGNORE” vs “INSERT … ON DUPLICATE KEY UPDATE”
...th many rows, I want to skip duplicate entries that would otherwise cause failure. After some research, my options appear to be the use of either:
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Need for predictable random generator
...ndomness in small runs of some games is undesirable -- it does seem too unfair for some use cases.
I wrote a simple Shuffle Bag like implementation in Ruby and did some testing. The implementation did this:
If it still seems fair or we haven't reached a threshold of minimum rolls, it returns a...
Difference between add(), replace(), and addToBackStack()
What is the main difference between calling these methods:
9 Answers
9
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How do I view all commits for a specific day?
...rking on a specific day and update my timesheet based on that, but it's a pain in the ass to type in the full date in ISO format so I just do it like this
git log --after=jun9 --before=jun10
and I add --author to only print my commits
git log --since=jun9 --until=jun10 --author=Robert
This pr...
Schema for a multilanguage database
... This option is similar to my option nr 1 but better. It is still hard to maintain and requires creating new tables for new languages, so I'd be reluctant to implement it.
– qbeuek
Nov 27 '08 at 10:22
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Solving “Who owns the Zebra” programmatically?
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Here's a solution in Python based on constraint-programming:
from constraint import AllDifferentConstraint, InSetConstraint, Problem
# variables
colors = "blue red green white yellow".split()
nationalities = "Norwegian German Dane Swede English".split()
pet...
Linux的诞生和发展 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...该标准是基于现有的UNIX 实践和经验，描述了操作系统的调用服务接口，用于保证编制的应用程序可以在源代码一级上在多种操作系统上移植运行。它是在1980 年早期一个UNIX 用户组(usr/group)的早期工作的基础上取得的。该UNIX 用...
VC MFC工具栏(CToolBar)控件 - C/C++ - 清泛网 - 专注C/C++及内核技术
...，在对话类里添加一个成员变量CString str;
接着在m_Toolbar调用CreateEx函数后，调用这个语句： m_Toolbar.EnableToolTips();//激活信息提示功能
然后在对话类里添加一个成员函数（用于TTN_NEEDTEXT消息处理函数），格式如下：
BOOL OnDisplay...