大约有 40,000 项符合查询结果(耗时:0.0676秒) [XML]

https://stackoverflow.com/ques... 

Convert Set to List without creating new List

... an argument, and your set is a Collection. List<String> mainList = new ArrayList<String>(); mainList.addAll(set); EDIT: as respond to the edit of the question. It is easy to see that if you want to have a Map with Lists as values, in order to have k different values, you need to crea...
https://stackoverflow.com/ques... 

SQL Server insert if not exists best practice

... join your Results table with your existing competitors Table and find the new competitors by filtering the distinct records that don´t match int the join: INSERT Competitors (cName) SELECT DISTINCT cr.Name FROM CompResults cr left join Competitors c on cr.Name = c.cName where c.cNam...
https://stackoverflow.com/ques... 

What is the purpose of the reader monad?

...rms (actually it will be closures because we want to do static scoping). newtype Env = Env ([(String, Closure)]) type Closure = (Term, Env) When we are done, we should get out a value (or an error): data Value = Lam String Closure | Failure String So, let's write the interpreter: interp' :...
https://stackoverflow.com/ques... 

how to rotate a bitmap 90 degrees

... You can also try this one Matrix matrix = new Matrix(); matrix.postRotate(90); Bitmap scaledBitmap = Bitmap.createScaledBitmap(bitmapOrg, width, height, true); Bitmap rotatedBitmap = Bitmap.createBitmap(scaledBitmap, 0, 0, scaledBitmap.getWidth(), scaledBitmap.get...
https://stackoverflow.com/ques... 

Bootstrap 3 Slide in Menu / Navbar on Mobile [closed]

I am building a browser-based mobile app and I've decided to use Bootstrap 3 as the css framework for the design. Bootstrap 3 comes with a great "responsive" feature in the navigation bar where it collapses automatically if it detects a specific "break point" regarding the resolution of the browser....
https://stackoverflow.com/ques... 

Get spinner selected items text?

...namicSpinner); m_addItemText = (EditText)findViewById(R.id.newSpinnerItemText); Button addButton = (Button)findViewById(R.id.AddBtn); Button clearButton = (Button)findViewById(R.id.ClearBtn); //////////////////////////////////////////////////////////////// ...
https://stackoverflow.com/ques... 

How to prevent custom views from losing state across screen orientation changes

... Parcelable superState = super.onSaveInstanceState(); SavedState ss = new SavedState(superState); //end ss.stateToSave = this.stateToSave; return ss; } @Override public void onRestoreInstanceState(Parcelable state) { //begin boilerplate code so parent classes can restor...
https://stackoverflow.com/ques... 

Do NSUserDefaults persist through an Update to an app in the Appstore?

...l my testing on the iPhone device (and Apples testing) tested the app as a new install. Without any documentation or way to test as an update I was unable to repeat the update crash all our customers are now experiencing. To sum up - probably a lesson learned the hard way!! – N...
https://stackoverflow.com/ques... 

How do I do an OR filter in a Django query?

... var channelOptions = { tags: "".split(" "), id: "1" }; initTagRenderer("".split(" "), "".split(" "), channelOptions); StackExchange.using("externalEditor", function() { // Have to fire editor after snippets, if snippets enabled...
https://stackoverflow.com/ques... 

Adding header for HttpURLConnection

...nd it had worked with basic authentication enabled in TomCat: URL myURL = new URL(serviceURL); HttpURLConnection myURLConnection = (HttpURLConnection)myURL.openConnection(); String userCredentials = "username:password"; String basicAuth = "Basic " + new String(Base64.getEncoder().encode(userCreden...