参考: Floodlight安装 SDNLAB Floodlight官网 Installation Guide 问题: 在follow安装教程安装Floodlight的过程中,ant编译时出现了: [taskdef] Could not load definitions from resource tasks.properties. It could not be found. 这个问题,导致floodlight执行失败. 解决办法: 官方网站给出了答案,需要将java升级到java8: If…

參考:JMLR的paper<an introduction to variable and feature selection> we summarize the steps that may be taken to solve a feature selection problem in a check list: 1. Do you have domain knowledge? If yes, construct a better set of "ad hoc" fea…

Let's say we have two strings: str1 = 'ACDEB' str2 = 'AEBC' We need to find the longest common subsequence, which in this case should be 'AEB'. Using dynamic programming, we want to compare by char not by whole words. we need memo to keep tracking th…

转自:http://stackoverflow.com/questions/6234016/jenkins-user-on-apt-get-install-installation QUESTION: I just installed Jenkins on my Ubuntu server via the debian installation steps (using apt-get install). I want my build to pull from a private git re…

题目 Source http://acm.hdu.edu.cn/showproblem.php?pid=4971 Description There's a company with several projects to be done. Finish a project will get you profits. However, there are some technical problems for some specific projects. To solve the proble…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=2426 For any school, it is hard to find a feasible accommodation plan with every student assigned to a suitable apartment while keeping everyone happy, let alone an optimal one. Recently the president of…

Data Structure Problem Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://acm.uestc.edu.cn/#/problem/show/483 Description Data structure is a fundamental course of Computer Science, so that each contestant is highly likely to solve this data structu…

https://github.com/flutter/flutter/issues/18828 https://blog.csdn.net/u011272795/article/details/83010974  <<<<<<<=============== https://medium.com/saugo360/flutter-my-futurebuilder-keeps-firing-6e774830bc2 Flutter: My FutureBuilder…

I tried to install MySQL 5.7 from source file and upgrading previous MySQL version to the lastest 5.7.22. following command record is shared as a note. not many explanations. If having  any questions, you can make a comment and I will reply when I se…

1.issue: How can I bypass kivy module error: ImportError: DLL load failed: The specified module could not be found? solve: python -m pip install docutils pygments pypiwin32 kivy.deps.sdl2 kivy.deps.glew 2.issue: No module named win32com solve:pip ins…