大约有 42,000 项符合查询结果（耗时：0.0546秒） [XML]
Missing file warnings showing up after upgrade to Xcode 4
I recently upgraded to Xcode 4 (which is a great upgrade) but now I'm getting some warnings that I did not get before. I have looked through forums and other SO posts but have not come across how to fix this.
...
Shall we always use [unowned self] inside closure in Swift
...
No, there are definitely times where you would not want to use [unowned self]. Sometimes you want the closure to capture self in order to make sure that it is still around by the time the closure is called.
Example: Making an asynchronous network request
If you are making an asy...
Why is React's concept of Virtual DOM said to be more performant than dirty model checking?
...
I'm the primary author of a virtual-dom module, so I might be able to answer your questions. There are in fact 2 problems that need to be solved here
When do I re-render? Answer: When I observe that the data is dirty.
How do I re-render efficiently? Answer: Using a virtual DOM to gener...
I want to delete all bin and obj folders to force all projects to rebuild everything
I work with multiple projects, and I want to recursively delete all folders with the name 'bin' or 'obj' that way I am sure that all projects will rebuild everything (sometimes it's the only way to force Visual Studio to forget all about previous builds).
...
What is the fastest way to send 100,000 HTTP requests in Python?
I am opening a file which has 100,000 URL's. I need to send an HTTP request to each URL and print the status code. I am using Python 2.6, and so far looked at the many confusing ways Python implements threading/concurrency. I have even looked at the python concurrence library, but cannot figure ...
How to throw an exception in C?
I typed this into google but only found howtos in C++,
11 Answers
11
...
int a[] = {1,2,}; Weird comma allowed. Any particular reason?
Maybe I am not from this planet, but it would seem to me that the following should be a syntax error:
20 Answers
...
How do I return to an older version of our code in Subversion?
I'm working on a project with a friend and I want to return to an older version of our code and set it to be the current. How do I do it?
...
Laravel requires the Mcrypt PHP extension
I am trying to use the migrate function in Laravel 4 on OSX . However, I am getting the following error:
22 Answers
...
Django connection to PostgreSQL: “Peer authentication failed”
This is the error I am receiving when I try to get to my Django admin site. I had been using MySQL database no problem. I am new to PostgreSQL, but decided to switch because the host I ultimately plan to use for this project does not have MySQL.
...