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JPA getSingleResult() or null
...esult() indicates it can't be found. Personally I can't stand this kind of API. It forces spurious exception handling for no real benefit. You just have to wrap the code in a try-catch block.
Alternatively you can query for a list and see if its empty. That doesn't throw an exception. Actually sinc...
Possible heap pollution via varargs parameter
...te the heap, the compiler just can't prove it. Previously, callers of such APIs would get annoying warnings that were completely pointless but had to be suppressed at every call site. Now the API author can suppress it once at the declaration site.
However, if the method actually is not safe, users...
Argparse: Required arguments listed under “optional arguments”?
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Note: this answer breaks the exposed API, check answer by Bryan_D down below.
– lol
May 2 at 13:26
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Binding a list in @RequestParam
...upVal.
Then calling the service with the list of params is as simple as:
API_URL?groupVal=kkk,ccc,mmm
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Android WebView style background-color:transparent ignored on android 2.2
...eloper Options -> Force GPU Rendering" to get transparency to work with API level 10.
– Aki
Aug 28 '12 at 21:57
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Is it possible to style html5 audio tag?
...e browser controls, but rolling your own controls and talking to the audio API via javascript.
Luckily, other people have already done this. My favorite player right now is jPlayer, it is very stylable and works great. Check it out.
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Do NSUserDefaults persist through an Update to an app in the Appstore?
...ems with NSUserDefaults in a data protection context:
Its a fully abstract API: the presence and location of its backing store is not considered part of that API, so you can’t explicitly manage its data protection.
Note On recent versions of OS X NSUserDefaults is managed by a daemon and folks who...
Working with select using AngularJS's ng-options
... Documentation is under "select" on their site: docs.angularjs.org/api/ng.directive:select
– Ben Lesh
Feb 19 '13 at 13:24
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How to determine the screen width in terms of dp or dip at runtime in Android?
...this question from Google, and later on I found an easy solution valid for API >= 13.
For future references:
Configuration configuration = yourActivity.getResources().getConfiguration();
int screenWidthDp = configuration.screenWidthDp; //The current width of the available screen space, in dp un...
Execution failed app:processDebugResources Android Studio
...o come across this same error in Android Studio after upgrading the SDK to API 21. I tried all the solutions i came across here on this site and https://code.google.com/p/android/issues/detail?id=61308. Here's how i eventually resoled this error:
I opened the app's gradle.build file and changed it f...