大约有 47,000 项符合查询结果(耗时:0.0495秒) [XML]

https://stackoverflow.com/ques... 

Regular expression \p{L} and \p{N}

I am new to regular expressions and have been given the following regular expression: 2 Answers ...
https://stackoverflow.com/ques... 

Callback to a Fragment from a DialogFragment

...(getActivity()) .setTitle(R.string.ERROR) .setIcon(android.R.drawable.ic_dialog_alert) .setPositiveButton(R.string.ok_button, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int whichB...
https://stackoverflow.com/ques... 

How to go to each directory and execute a command?

...e a bash script that goes through each directory inside a parent_directory and executes a command in each directory . ...
https://stackoverflow.com/ques... 

How do you sign a Certificate Signing Request with your Certification Authority?

...he ca module openssl ca ... ... You are missing the prelude to those commands. This is a two-step process. First you set up your CA, and then you sign an end entity certificate (a.k.a server or user). Both of the two commands elide the two steps into one. And both assume you have a an OpenSSL con...
https://stackoverflow.com/ques... 

List vs tuple, when to use each? [duplicate]

In Python, when should you use lists and when tuples? 7 Answers 7 ...
https://stackoverflow.com/ques... 

In eclipse, unable to reference an android library project in another android project

... project it all went fine. I guess that this must be something to do with android using ant underneath the covers. Edit: The project name needs match the folder name on the file system. What you are seeing in the Project Properties->Android->Library Reference is a relative file system path. ...
https://stackoverflow.com/ques... 

How to SSH to a VirtualBox guest externally through a host? [closed]

... one interface already which is using NAT. Then go to the Network settings and click the Port Forwarding button. Add a new Rule. As the rule name, insert "ssh". As "Host port", insert 3022. As "Guest port", insert 22. Everything else of the rule can be left blank. or from the command line VBoxMan...
https://stackoverflow.com/ques... 

What is the difference between lower bound and tight bound?

...the upper bound, while Omega is the lower bound. Theta requires both Big O and Omega, so that's why it's referred to as a tight bound (it must be both the upper and lower bound). For example, an algorithm taking Omega(n log n) takes at least n log n time, but has no upper limit. An algorithm taking...
https://stackoverflow.com/ques... 

Graph visualization library in JavaScript

I have a data structure that represents a directed graph, and I want to render that dynamically on an HTML page. These graphs will usually be just a few nodes, maybe ten at the very upper end, so my guess is that performance isn't going to be a big deal. Ideally, I'd like to be able to hook it in w...
https://stackoverflow.com/ques... 

How to design a database for User Defined Fields?

...s a variant of #2). This answer is specifically tailored to this situation and the description of the data distribution and access patterns described. Pros: Because you indicate that some UDFs have values for a small portion of the overall data set, a separate table would give you the best perfor...