大约有 33,000 项符合查询结果(耗时:0.0434秒) [XML]

https://stackoverflow.com/ques... 

Select DISTINCT individual columns in django?

...ee for yourself. # The query would look something like # SELECT DISTINCT "app_productorder"."category" FROM "app_productorder" There are a couple of things to remember here. First, this will return a ValuesQuerySet which behaves differently from a QuerySet. When you access say, the first element ...
https://stackoverflow.com/ques... 

Does setWidth(int pixels) use dip or px?

...ure you're wondering how to use dips instead. The answer is in TypedValue.applyDimension(). Here's an example of how to convert dips to px in code: // Converts 14 dip into its equivalent px Resources r = getResources(); int px = Math.round(TypedValue.applyDimension( TypedValue.COMPLEX_UNIT_DI...
https://stackoverflow.com/ques... 

Where are an UIWebView's cookies stored?

I'm building an iPhone app with cookies. Deleting cookies in the Safari settings doesn't delete them. Where are they stored? Is it possible to read them from another UIWebView? ...
https://stackoverflow.com/ques... 

How can I return to a parent activity correctly?

I have 2 activities (A and B) in my android application and I use an intent to get from activity A to activity B. The use of parent_activity is enabled: ...
https://stackoverflow.com/ques... 

How do I wrap link_to around some html ruby code?

...e the case that the HTML is being generated from somewhere within your own app which you know to be safe. Still, it's best to avoid this in 99% of situations. (Not to mention the above code has a mistake anyway, it should start with <%=, not <%.) – GMA Oc...
https://stackoverflow.com/ques... 

How to prevent SIGPIPEs (or handle them properly)

... What exactly happens if my program writes to a broken pipe (a socket in my case)? SIG_IGN makes the program ignore the SIG_PIPE, but then does that result in send() doing something undesirable? – sudo ...
https://stackoverflow.com/ques... 

Programmatically fire button click event?

... touch. See cocoawithlove.com/2008/10/…. However, you cannot submit your app to the App Store using this method, as it uses a private API. It is normally used for debugging purposes. – Evan Mulawski Apr 11 '11 at 18:32 ...
https://stackoverflow.com/ques... 

ExecJS and could not find a JavaScript runtime

...there anyway to have these gems included in the default Gemfile when a new application is created? – Richard Fawcett Sep 25 '11 at 16:16 2 ...
https://stackoverflow.com/ques... 

Using a dispatch_once singleton model in Swift

I'm trying to work out an appropriate singleton model for usage in Swift. So far, I've been able to get a non-thread safe model working as: ...
https://stackoverflow.com/ques... 

Easier way to debug a Windows service

...'s kind of cumbersome and I'm wondering if there is a more straightforward approach. 28 Answers ...