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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...
App Inventor 2 项目合并工具 AIMerge · App Inventor 2 中文网
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App Inventor 2 项目合并工具 AIMerge
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App Inventor 2 项目合并工具
本文档最初由米尔斯学院(Mills College)的 Kate Feeney 为 AI Classic 编写。该计划在她的论文通...
Which is faster: Stack allocation or Heap allocation
This question may sound fairly elementary, but this is a debate I had with another developer I work with.
23 Answers
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C/C++中的段错误(Segmentation fault) - C/C++ - 清泛网 - 专注C/C++及内核技术
...。
不知道什么时候才可以有能够处理NULL的glibc库诞生啊!
不得已,我现在为好多的函数做了衣服,避免glibc的函数被NULL给感染,导致我的Mem访问错误,而我还不知道NULL这个病毒已经在侵蚀我的身体了。
Segment fault 永...
重构理论及实践——用工厂模式重构c++后台代码 - C/C++ - 清泛网 - 专注C/C...
...咳咳,pm的需求我都忙不过来了,管他什么模式不模式的啊。至于代码重构么,功能实现出来就行了,你说代码多、乱、复杂、没条理、看不懂?喂喂,谁知道明天这代码谁维护呢,到时候看不懂管我鸟事啊? 另一方面,一些讲...
华为公司的新产品研发流程管理 - 项目管理 - 清泛网 - 专注C/C++及内核技术
...,一个设计得再好的研发方案和计划在执行过程中总避免不了由于这样或那样的原因,而被迫调整甚至取消。然而,许多项目的取消或调整是在大量资金注入之后进行的,此时已经太晚了,因为在大多数情况下,原本是可以早一...
Why does changing 0.1f to 0 slow down performance by 10x?
... on whether 0 or 0.1 is used.
Here's the test code compiled on x64:
int main() {
double start = omp_get_wtime();
const float x[16]={1.1,1.2,1.3,1.4,1.5,1.6,1.7,1.8,1.9,2.0,2.1,2.2,2.3,2.4,2.5,2.6};
const float z[16]={1.123,1.234,1.345,156.467,1.578,1.689,1.790,1.812,1.923,2.034,2.145...
在 App Inventor 2 中使用图像 · App Inventor 2 中文网
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Determining the size of the image on the screen
Details on fixed vs. responsive sizing
In summary: What MIT App Inventor Programmers Should Do
Synopsis: App Inventor works best if you use images whose size matches the size you want them to appear on your screen...
What is the difference between graph search and tree search?
...n
}
return next
Depending on how you implement select from open, you obtain different variants of search algorithms, like depth-first search (DFS) (pick newest element), breadth first search (BFS) (pick oldest element) or uniform cost search (pick element with lowest path cost), the popular A-sta...
C语言结构体里的成员数组和指针 - c++1y / stl - 清泛IT社区,为创新赋能!
...少内存碎片。(其实,我个人觉得也没多高了,反正你跑不了要用做偏移量的加法来寻址)我们来看看是怎么个连续的,用gdb的x命令来查看:(我们知道,用struct line {}中的那个char contents[]不占用结构体的内存,所以,struct line就...
