大约有 48,000 项符合查询结果(耗时:0.0564秒) [XML]

https://stackoverflow.com/ques... 

Why can't I use a list as a dict key in python?

...nt's values, for instance when checking (in-)equality. Many would - understandably - expect that you can use any list [1, 2] to get the same key, where you'd have to keep around exactly the same list object. But lookup by value breaks as soon as a list used as key is modified, and for lookup by iden...
https://stackoverflow.com/ques... 

Difference between null and empty (“”) Java String

What is the difference between null and the "" (empty string)? 22 Answers 22 ...
https://stackoverflow.com/ques... 

Which is best way to define constants in android, either static class, interface or xml resource?

I'm developing an android application which uses web service to get data from server, for that I'm having three different set of URLs to point development system, test server and live server. It's difficult to change URL whenever I want to give application for testing/live. so I planned to make it a...
https://stackoverflow.com/ques... 

Forking from GitHub to Bitbucket

...le to get the updates without the need to download all the CakePHP zip/tar and replace the folder, then commit and push, but maybe with a ‘merge’(?). ...
https://stackoverflow.com/ques... 

Real world use cases of bitwise operators [closed]

...ets Always involves checksums, parity, stop bits, flow control algorithms, and so on, which usually depend on the logic values of individual bytes as opposed to numeric values, since the medium may only be capable of transmitting one bit at a time. Compression, Encryption Both of these are heavily d...
https://stackoverflow.com/ques... 

What does GitHub for Windows' “sync” do?

With GitHub for Windows, you can "publish" a branch, and then "sync" that branch to GitHub. 4 Answers ...
https://stackoverflow.com/ques... 

How to make a HTTP request using Ruby on Rails?

...e) I should make a request to that website (in my case a HTTP GET request) and receive the response. 7 Answers ...
https://stackoverflow.com/ques... 

How to get the size of a JavaScript object?

...e re-factored the code in my original answer. I have removed the recursion and removed the assumed existence overhead. function roughSizeOfObject( object ) { var objectList = []; var stack = [ object ]; var bytes = 0; while ( stack.length ) { var value = stack.pop(); ...
https://stackoverflow.com/ques... 

How to Publish Web with msbuild?

Visual Studio 2010 has a Publish command that allows you to publish your Web Application Project to a file system location. I'd like to do this on my TeamCity build server, so I need to do it with the solution runner or msbuild. I tried using the Publish target, but I think that might be for ClickOn...
https://stackoverflow.com/ques... 

socket.io rooms or namespacing?

I am investigating nodejs/socket.io for real time chat, and I need some advice for implementing rooms. 5 Answers ...